-c- Return type

Question

what is the point of the usage of reutrun sonuc;??
#include <stdio.h>

int fak(int sayi)

{
int sonuc=1;
for(int i=0;i<sayi;i++){
sonuc=sonuc*(i+1);
}
return sonuc; ///
}
int main(){
printf("%d",fak(5));
}

Answer 1

When you make a call to method with some return type then it must return some data of same type. In your case, the return sonuc just replaces fak(5) by returning a value so that it can be printed.

Answer 2

and what is "come back" in your example?
if you already understood what is return value that doesn't mean that everyone must understand it now, right?
I do not understand what is return value also, so I will be happy to get the clear explanation ....