Can anybody explain why the "main" isn't a reserved word in C acording to SOLOLEARN? And why it print 3 the following code?

Question

#include <stdio.h>

int main() {
int main =3;
printf("%d", main);
return 0;
}

Answer 1

Long story short, the compiler views main() as a function (which it is), so using main as a variable isn't in conflict with it.

As for your second question, int main = 3 is declaring the variable 'main' and initializes its value as 3. Printf is then printing the value of 'main' which is equal to 3, so 3 is what is being printed by that code.

Hope that helps!

Answer 2

Thx..... Yes if "main" isn't a reserved word, the code has to output on the screen 3, but as far as I know the C language standard doesn't allow to use "main" as a name for a variable. So my question was around the "main" used like in the code if it is acording to C standard.

Answer 3

You're welcome. That's what I was implying in the first paragraph. Main isn't a reserved keyword in C language, so you can use it as a variable name if you want.