# demo1
#include<iostream.h>
#include<stdio.h>
#include<conio.h>
void main()
  {
          int num1,num2,c;
          clrscr();
          printf("enter the value of first number:");
          scanf("%d, &num1");
          printf("enter the value of second number:");
          scanf("%d, &num2");
          c=a+b;
          printf("the value of c is:",c);
          getch();
  }