Question 37600 in Ubuntu Question posted in
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Warning while using gcc compiler -Wimplicit-int – Ubuntu

I’m just starting out on C language and I’m getting stuck on a seemingly very basic code. Now, I’m using gcc to compile on ubuntu terminal and I keep getting this warning:

return type defaults to ‘int’ [-Wimplicit-int]

NOTE: the program compiles and runs just fine, but this warning bugs me. Please help.

Here’s my code:

#include <stdio.h>

myFunction(char name[])

{    
    printf("Hello %sn", name);
}

int main(void)
{
    myFunction("Liam")
    myFunction("John")
    myFunction("Anne")
    return (0);
}
Tags:

2

Answers


  1. 0

    myFunction(char name[]) is invalid C. In ancient days this syntax with no return type was allowed, the return type would then default to int. gcc kept this dangerous "feature" as a non-standard extension. Other compilers might just tell you that the program is invalid and refuse to generate an executable.

    Change to:

    void myFunction(char name[])
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  2. 0

    Your function myFunction does not declare any return types. If you do not specify any, C will assume you implicitly mean to return an int.

    If you don’t mean to return anything, you should declare it as void myFunction.

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