Posted 27 May 2006 - 06:35 PM
Hallo every body. I am a beginer in the field of programing and hence asking here a very basic problem in C language. Please forgive me if this question looks you to be stupid.
Here is my problem...
Any function returns a value to another function which have called it, eg. Look at the following simple program-
int a, fact;
printf("\nEnter any number");
printf("Factorial Value= %d", fact);
int f=1, i;
In this program, We have used a user defined function 'factorial'. The statement 'return(f)' tells the compiler to return the value of variable 'f' to the function 'main'.
'main' is also a function, which also must return a value to something. This is my question that to whom the function 'main' returns value. If it is the O/S, then what the O/S does with this value? Further, we use a keyword 'void' before the function 'main' to tell the compiler to not to return any value by the function 'main'.
What does this all mean???