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Hey guys. I have a C++ program I wrote that compiles fine when using g++. No errors, no warnings. Even verbose mode seems to indicate no warnings.
Here is the code for the Windows version:
Code:
#include <iostream>
#include <cstdlib>
#include "ClearScreen.h"
int main()
{
bool quit;
int guess;
int randomNumber;
quit = false;
srand(time(0));
ClearScreen("windows");
std::cout << "Welcome to Numbamatic, the Guess a Number Game!\n\n";
std::cout << "Please press 'Enter' to start!";
getchar();
ClearScreen("windows");
while (!quit)
{
std::string answer;
randomNumber = rand() % 10 + 1;
std::cout << "The number has been generated!\n\n";
do
{
std::cout << "Please guess a number!\n> ";
std::cin >> guess;
ClearScreen("windows");
if (guess > randomNumber)
{
std::cout << "Sorry, but the number you guessed was too high.\n\n";
}
else if (guess < randomNumber)
{
std::cout << "Sorry, but the number you guessed was too low.\n\n";
}
else
{
std::cout << "Congratulations! You correctly guessed the "\
"number!\n\n";
}
} while (guess != randomNumber);
std::cout << "Would you like to play again?\n>[y/n] ";
std::cin >> answer;
if (answer != "y" && answer != "n")
{
std::cout << "I'm sorry, but you entered an invalid response."\
" The game will now terminate due to your incompetence."\
" Have a nice day!\n\n";
quit = true;
}
else if (answer == "y")
{
ClearScreen("windows");
}
else
{
quit = true;
}
}
std::cout << "Thanks for playing!\n\n";
return 0;
}
And the ClearScreen.h file:
Code:
int ClearScreen(std::string os)
{
if (os == "unix")
{
system("clear");
}
else if (os == "windows")
{
system("cls");
}
else
{
std::cout << "Error!" << std::endl;
std::cout << "The value you passed to ClearScreen() is not valid!\n";
exit(1);
}
return 0;
}
The above code compiles perfectly in Linux using g++. However, trying to compile it for Windows using MinGW does not work. I've tried using Visual C++ 2008 on a Windows box to compile it, and it still does not work.
i586-mingw32msvc-cc numbamatic-windows.cpp -o numbamatic
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0xe): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x52): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned int) const'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x8b): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned int) const'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0xd0): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned int) const'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x120): undefined reference to `std::ios_base::Init::Init()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x163): undefined reference to `std::ios_base::Init::~Init()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x1cd): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x1d2): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x1dd): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x1e3): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x1f3): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x1f8): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x22a): undefined reference to `___gxx_personality_sj0'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x281): undefined reference to `std::allocator<char>::allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x2a0): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x2cc): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x2f0): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x30d): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x31d): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x329): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x339): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x33e): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x352): undefined reference to `std::allocator<char>::allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x371): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x38e): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x3db): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x3ff): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x41c): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x43c): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x473): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x49e): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x4aa): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x4ba): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x4c6): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x4d5): undefined reference to `std::cin'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x4da): undefined reference to `std::basic_istream<char, std::char_traits<char> >::operator>>(int&)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x4e9): undefined reference to `std::allocator<char>::allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x508): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x534): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x558): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x575): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x59a): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x5bb): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x5c7): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x5e1): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x5ed): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x5ff): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x60b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x627): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x633): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x642): undefined reference to `std::cin'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x647): undefined reference to `std::basic_istream<char, std::char_traits<char> >& std::operator>><char, std::char_traits<char>, std::allocator<char> >(std::basic_istream<char, std::char_traits<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x6a7): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x6b3): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x6ee): undefined reference to `std::allocator<char>::allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x70d): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x739): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x7da): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x7f4): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x80e): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x833): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x854): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x890): undefined reference to `std::cout'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text+0x89c): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text$_ZStneIcSt11char_traitsIcESaIcEEbRKSbIT_T0_T1_EPKS3_[bool std::operator!=<char, std::char_traits<char>, std::allocator<char> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, char const*)]+0x10): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::compare(char const*) const'
/tmp/ccsNJyWn.o:numbamatic-windows.cpp:(.text$_ZSteqIcSt11char_traitsIcESaIcEEbRKSbIT_T0_T1_EPKS3_[bool std::operator==<char, std::char_traits<char>, std::allocator<char> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, char const*)]+0x10): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::compare(char const*) const'
collect2: ld returned 1 exit status
dev@dev:~/tutorials/cpp/personal.projects$ less numbamatic-windows.cpp
dev@dev:~/tutorials/cpp/personal.projects$ less numbamatic-unix.cpp
dev@dev:~/tutorials/cpp/personal.projects$ g++ numbamatic-windows.cpp
dev@dev:~/tutorials/cpp/personal.projects$ g++ -v numbamatic-windows.cpp
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.2 --program-suffix=-4.2 --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-mpfr --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7)
/usr/lib/gcc/x86_64-linux-gnu/4.2.3/cc1plus -quiet -v -D_GNU_SOURCE numbamatic-windows.cpp -quiet -dumpbase numbamatic-windows.cpp -mtune=generic -auxbase numbamatic-windows -version -fstack-protector -fstack-protector -o /tmp/ccYgt8Io.s
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/4.2.3/../../../../x86_64-linux-gnu/include"
ignoring nonexistent directory "/usr/include/x86_64-linux-gnu"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/4.2
/usr/include/c++/4.2/x86_64-linux-gnu
/usr/include/c++/4.2/backward
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/4.2.3/include
/usr/include
End of search list.
GNU C++ version 4.2.3 (Ubuntu 4.2.3-2ubuntu7) (x86_64-linux-gnu)
compiled by GNU C version 4.2.3 (Ubuntu 4.2.3-2ubuntu7).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: d12ba6ac5ad10f3cd3c194fd1127d2d9
as --traditional-format -V -Qy -o /tmp/cc4aTJB1.o /tmp/ccYgt8Io.s
GNU assembler version 2.18.0 (x86_64-linux-gnu) using BFD version (GNU Binutils for Ubuntu) 2.18.0.20080103
/usr/lib/gcc/x86_64-linux-gnu/4.2.3/collect2 --eh-frame-hdr -m elf_x86_64 --hash-style=both -dynamic-linker /lib64/ld-linux-x86-64.so.2 /usr/lib/gcc/x86_64-linux-gnu/4.2.3/../../../../lib/crt1.o /usr/lib/gcc/x86_64-linux-gnu/4.2.3/../../../../lib/crti.o /usr/lib/gcc/x86_64-linux-gnu/4.2.3/crtbegin.o -L/usr/lib/gcc/x86_64-linux-gnu/4.2.3 -L/usr/lib/gcc/x86_64-linux-gnu/4.2.3 -L/usr/lib/gcc/x86_64-linux-gnu/4.2.3/../../../../lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.2.3/../../.. /tmp/cc4aTJB1.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-linux-gnu/4.2.3/crtend.o /usr/lib/gcc/x86_64-linux-gnu/4.2.3/../../../../lib/crtn.o
dev@dev:~/tutorials/cpp/personal.projects$ i586-mingw32msvc-cc numbamatic-windows.cpp -o numbamatic
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0xe): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x52): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned int) const'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x8b): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned int) const'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0xd0): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned int) const'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x120): undefined reference to `std::ios_base::Init::Init()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x163): undefined reference to `std::ios_base::Init::~Init()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x1cd): undefined reference to `std::cout'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x1d2): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x1dd): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x1e3): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x1f3): undefined reference to `std::cout'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x1f8): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x22a): undefined reference to `___gxx_personality_sj0'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x281): undefined reference to `std::allocator<char>::allocator()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x2a0): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x2cc): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x2f0): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x30d): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x31d): undefined reference to `std::cout'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x329): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x339): undefined reference to `std::cout'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x33e): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x352): undefined reference to `std::allocator<char>::allocator()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x371): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x38e): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x3db): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x3ff): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x41c): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x43c): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x473): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x49e): undefined reference to `std::cout'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x4aa): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x4ba): undefined reference to `std::cout'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x4c6): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x4d5): undefined reference to `std::cin'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x4da): undefined reference to `std::basic_istream<char, std::char_traits<char> >::operator>>(int&)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x4e9): undefined reference to `std::allocator<char>::allocator()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x508): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x534): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x558): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x575): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x59a): undefined reference to `std::allocator<char>::~allocator()'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x5bb): undefined reference to `std::cout'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x5c7): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x5e1): undefined reference to `std::cout'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x5ed): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x5ff): undefined reference to `std::cout'
/tmp/ccIgUslU.o:numbamatic-windows.cpp:(.text+0x60b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
.........................
collect2: ld returned 1 exit status
dev@dev:~/tutorials/cpp/personal.projects$ int ClearScreen(std::string os)
bash: syntax error near unexpected token `('
dev@dev:~/tutorials/cpp/personal.projects$ {
> if (os == "unix")
> {
> system("clear");
bash: syntax error near unexpected token `"clear"'
dev@dev:~/tutorials/cpp/personal.projects$ }
bash: syntax error near unexpected token `}'
dev@dev:~/tutorials/cpp/personal.projects$ else if (os == "windows")
bash: syntax error near unexpected token `else'
dev@dev:~/tutorials/cpp/personal.projects$ {
> system("cls");
bash: syntax error near unexpected token `"cls"'
dev@dev:~/tutorials/cpp/personal.projects$ }
bash: syntax error near unexpected token `}'
dev@dev:~/tutorials/cpp/personal.projects$ else
bash: syntax error near unexpected token `else'
dev@dev:~/tutorials/cpp/personal.projects$ {
> std::cout << "Error!" << std::endl;
bash: !": event not found
> std::cout << "The value you passed to ClearScreen() is not valid!\n";
bash: !\n": event not found
> exit(1);
bash: syntax error near unexpected token `1'
dev@dev:~/tutorials/cpp/personal.projects$ }
bash: syntax error near unexpected token `}'
dev@dev:~/tutorials/cpp/personal.projects$
dev@dev:~/tutorials/cpp/personal.projects$ return 0;
bash: return: can only `return' from a function or sourced script
dev@dev:~/tutorials/cpp/personal.projects$ }
As you can see, it's more or less a lot of the same repeated over and over, until the very end.
I'm not an experienced C++ developer, and I'm just trying to get it to work in both Windows and Linux. As I said before, the Linux version compiles fine, and the Windows version compiles fine if I use g++...but this does not produce a Windows binary file, obviously, and is therefore of little use.
What's the deal here?
[NOTE]
I removed a portion of the error report because it causes me to go over the character limit.
[/NOTE]
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