C programm to add two numbers

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,sum=0;
clrscr();
/*printf("1st number \n");
scanf("%d \n",&a);
printf("2nd number \n");
scanf("%d \n",&b);
sum=a+b;
printf("\n %d sum=",&sum); */
for(i=2;i<=10;i++)
printf("%d \n",i);
getch();
}