不带参数的功能Vs带参数的功能

Question

I was educated from here that

void f();
void f(int a) {
    printf("%d", a);
}

the parameter type list "wins". I did the following...

int fun(void); //parameter type list
int fun(int a, double b)//parameter type list
{
    printf("%d, %f", a, b);
    return 0;
}

I was expecting that compiler will throw an error (since overloading is not possible in c), but it didn't

Can anyone help me in this regards?

Thanks.

Answer 1

Since you're using Visual Studio, the most likely reason for your situation is that your code is in a C++ file. Note that VS distinguishes between C and C++ files based on the file extension. Changing your file to a .c file rather than a .cpp file should do the trick.

(Note that when you Add New Item to create a source file, you can create a C file simply by adding a new C++ file and then changing the name of the created file to be .c , as in the image below.)