C++ Program .Write a program addition of two number.

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
clrscr();
printf("\n enter the value of a");
scanf("\n %d",&a);
printf("\n enter the valu of b");
scanf("\n %d",&b);
c=a+b;
printf("\n %d",c);
getch();
}