Basic Addition and subtraction program using user defined function in C

Basic Addition and subtraction program using user defined function in C | UDF example in C | Addition and subtraction UDF in C

#include
#include

int add(int,int);
int diff(int,int);
main()
{
  int num1,num2,sum,sub;
  clrscr();
  printf(" enter two number's");
  scanf("%d%d",&num1,&num2);
  sum=add(num1,num2);
  sub=diff(num1,num2);
  printf(" sum=%d and sub=%d",sum,sub);
  getch();
  }
   int add(int num1,int num2)
   {
   return num1+num2;
   }
   int diff(int num1,int num2)
   {
      return num1-num2;
      }