WAP to add two number or find the sum of two number using UDF functions with return value

/*WAP to add two number or find the sum of two number using UDF functions with return value*/

#include<stdio.h>
#include<conio.h>

int addint(int,int);

void main()
{
 int num1,num2,ans;
 clrscr();

 scanf("%d %d",&num1,&num2);
 ans=addint(num1,num2);
 printf("%d",ans);

 getch();
}

int addint(int n1, int n2)
{
 return(n1+n2);
}