#include<stdio.h>
#include<stdlib.h>
extern "C"
{
  int add(int a,int b,int c);
}
void setup()
{
  Serial.begin(9600);
}
int main()
{
  int a,b,c,x ;
  printf("Enter a number: ");
  scanf("%d",&a);
  printf("%d\n",a);
  printf("Enter a number: ");
  scanf("%d",&b);
  printf("%d\n",b);
  printf("Enter a number: ");
  scanf("%d",&c);
  printf("%d\n",c);
  x = add(a,b,c);
  printf("The number after addition : %d\n",x);
  return 0;
}