[SOLVED] ERROR: iostream.h: No such file or directory...‘cin’ was not declared in this scope

FelipeGamma · 06-08-2010, 07:00 PM

I create a simple code for add two number:

Code:

#include<iostream.h>
#include<stdio.h>

main()
{
int num1, num2, sum;
cout<< "input the first number: ";
cin>> num1;
cout<< "input the second number: ";
cin>> num2;
sum= num1+num2;
cout<< "The result is: ";
cout<< sum;
}

But when I compile the code:

Code:

$ c++ sum.c

The console shows the next error:

Quote:

suma.c:1:21: error: iostream.h: No such file or directory
suma.c:3:18: error: stlib.h: No such file or directory
suma.c: In function ‘int main()’:
suma.c:8: error: ‘cout’ was not declared in this scope
suma.c:9: error: ‘cin’ was not declared in this scope

I search the answer to my problem in various forums but I can't solve the problem.
I think that is due to I need some package or that I don't install the necessary libraries.

Thanks,

paulsm4 · 06-08-2010, 07:09 PM

Hi -

"iostream.h" is an anachronism.

Modern C++ programs should use "#include <iostream>" instead.

Here's an example:

Code:

#include <iostream>
 
using namespace std;
 
int 
main(int argc, char* argv[])
{
  cout << "Hello world" << endl;
  return 0;
}

'Hope that helps .. PSM

PS:
Of course, maybe you just didn't install the complete development package.

For Redhat or Centos, for example, you'd run something like:

Quote:

yum install gcc gcc-c++ make autoconf automake gawk binutils

for Ubuntu, an equivalent command might be:

Quote:

sudo aptitude install build-essential

FelipeGamma · 06-08-2010, 08:02 PM

Thanks paulsm4...