newbie Q: ubuntu build-essentila argv problem

jabbertrex · 04-12-2007, 09:43 PM

I installed Ubuntu and installed the build-essential package using Symantec Package Manager

When I write a simple C program, one compies and the other gives error

Example I: works fine
#include <stdio.h>
int main(argc, char *argv[])
{
printf("# of args %d \n", argc);
}

Example II: gives error in compile
#include <stdio.h>
int main(argc, char *argv[])
{
printf("# of args: %d, 1st arg: %s\n", argc, argv[0]);
}

Example 2 gives me error: argv undeclared (first use in the function)

I am using Ubuntu gcc 4.0.2 20050808 prerelease version that came with the book.

This is a very simple program. Why I am getting argv undeclared error.

Thanks,
Jay

osor · 04-13-2007, 03:02 PM

I don’t see why you leave off the type of argc and frankly don’t understand why it compiles correctly in the first scenario. Try

Code:

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

instead of

Code:

int main(argc, char *argv[])