A C language program for adding two numbers

This is the program that takes two numbers as  input from the user and then add them and print the answer on the output screen.

#include<stdio.h>
#include<conio.h>
void main(void)
{
clrscr();
int num1,num2;
int answer;
printf("Enter the first number=");
scanf("%d",&num1);
printf("\n Enter the second number= ");
scanf("%d",&num2);
answer=num1+num2;    //here we make a formula for variable "answer"
printf("\n The sum of numbers = %d",answer);
getch();
}

Output:-
                    Enter the first number = 5
                    Enter the second number= 15
                    The sum of numbers = 20