i made one program in C,but i do not know haw to run it?

debian:/# gcc ctest
/usr/bin/ld: cannot open crt1.o: No such file or directory
collect2: ld returned 1 exit status

thats my program...

#include <stdio.h>

void main(void)

{

printf(this is my simple program in Linux);

}

It shouldn't compile. Void main is wrong.

if you wanna do it by the book try this :

#include <stdio.h>

int main( int argc, char* argv[])

{

printf("this is my simple program in Linux");

return 0;
}

but judging from the output you provided I think you don't have gcc properly installed on your machine.

It compiles perfectly, and why shouldn't it? I can see no fatal errors in 'void main'

I really don't want to get in this argument, but oh well.


void main is undefined. According to the C/C++ standards, main should return an int. There is no exception. If you don't believe me, check out the language standard.

"void main()" shouldn't be compiled. "main" should return "int".
But you can write "main" without any return value.

main()

It doesn't mean that the return type is void. The compiler assumes that return "int" if you don't put any return type in front of "main".

I think the main() function thing is not the actual problem. "void main()" is not the right way, but it actually should only result in a warning.

I think the real problem is the command you are using to compile your program with. It should read: "gcc ctest.c" at least. After this, the executable file will bee called "a.out" and you should run it with: "./a.out".

Better yet: "gcc ctest.c ctest". Then your executable will be called "ctest", and can run it with "./ctest".

Like bgraur already pointed out, the text inside the printf statement should be quoted with " ". Without these double quotes, compiling will fail anyway.