Question about compiling (noob)

arya6000 · #1 (**permalink**) 12-03-2006

I'm just getting started to lean C and I'm using Ubuntu today I found a tutorial at this site: http://einstein.drexel.edu/courses/C..._tutorial.html and I got an error after compiling the fist code:

Code:

#include < stdio.h>

void main()
{
    printf("\nHello World\n");
}

I try to compile it with: "cc hello.c" and got this error:

Code:

arya@arya-computer:~/Desktop$ cc hello.c
hello.c:1:20: error:  stdio.h: No such file or directory
hello.c: In function ‘main’:
hello.c:5: warning: incompatible implicit declaration of built-in function ‘printf’
hello.c:4: warning: return type of ‘main’ is not ‘int’

Why isn't this working is it because I'm using Ubuntu instead of FreeBSD?

ramesh.jella · #2 (**permalink**) 12-04-2006

hi arya
you have to know that it may not have space before stdio.h
just gothrough your code

#include <stdio.h>

void main()
{
printf("\nHello World\n");
}

do this

arya6000 · #3 (**permalink**) 12-06-2006

Quote:

Originally Posted by ramesh.jella

hi arya
you have to know that it may not have space before stdio.h
just gothrough your code

#include <stdio.h>

void main()
{
printf("\nHello World\n");
}

do this

Now it gives this error

Code:

arya@arya-computer:~/Desktop$ cc hello.c
hello.c:1:19: error: stdio.h: No such file or directory
hello.c: In function ‘main’:
hello.c:5: warning: incompatible implicit declaration of built-in function ‘printf’

nathan · #4 (**permalink**) 12-06-2006

The return type of main should be int, not void. The code below compiled & ran fine on my computer. Does Ubuntu use gcc? ( If so, your version of 'cc' is possibly a link to 'gcc'. ) I'm using gcc and it worked.

Code:

#include <stdio.h>

int main()
{
printf("\nHello World\n");
}

arya6000 · #5 (**permalink**) 12-06-2006

Quote:

Originally Posted by nathan

The return type of main should be int, not void. The code below compiled & ran fine on my computer. Does Ubuntu use gcc? ( If so, your version of 'cc' is possibly a link to 'gcc'. ) I'm using gcc and it worked.

Code:

#include <stdio.h>

int main()
{
printf("\nHello World\n");
}

same thing when I use gcc, do you think there is something wrong with the compiler? I'm sorry if this sounds stupid, but one of first lines says: hello.c:1:19: error: stdio.h: No such file or directory should there be a file called stdio.h in the same folder as my .c file is?

Code:

arya@arya-computer:~/Desktop$ gcc hello.c
hello.c:1:19: error: stdio.h: No such file or directory
hello.c: In function ‘main’:
hello.c:5: warning: incompatible implicit declaration of built-in function ‘printf’

vgersh99 · #6 (**permalink**) 12-06-2006

change this:

Code:

#include < stdio.h>

to this - loose the trailing space after '<'

Code:

#include <stdio.h>

arya6000 · #7 (**permalink**) 12-10-2006

k guys, I found the problem, gcc was not installed properly, now it is and now I have a file called a.out after compiling it. How can I run it?

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