Okai here is the Code so far, It's not bad :p But the teacher told me to add a Main function that calls my sum function. WTF? wouldn't the compiler go crazy if I change the 'main' function because its the MAIN! function. And what does he mine by a function that calls the other. Here is the program it works, but I need someone to just organize it with a function that calls this sum function. So this is simple basic C-free program so no complex things please

Code:

#include <stdio.h>

int sum(int x, int y);

int

main(void)

{

int x,y;

x=7;y=2;

printf(" x y result\n\n");

printf("%4d%4d%4d\n",x,y,sum(x,y));

printf("%4d%4d%4d\n",x,y,sum(y,x));

printf("%4d%4d%4d\n",sum(sum(y,x),y),y,sum(x,y));

printf("%4d%4d%4d\n",(sum(sum(y,x),sum(y,x))),y,sum(x,y));

printf("%4d%4d%4d\n",(sum(sum(y,x),sum(y,x))),sum(y,y),sum(x,y));

return(0);

}

int sum(int x,int y)

{

int result;

result=x+y;

return(result);

}