第二个程序不知道怎么用到循环

#include<stdio.h>
int main()
{
    int a, b, i; int n;
    printf("输入两个数:");
    scanf("%d%d", &a, &b);
    i = a + b;
    printf("%d+%d=", a, b);
    scanf("%d", &n);
    while (n != i)
    {
        printf("Not correct!Try again!\n");
        scanf("%d", &n);
    }
    printf("Right!");
return 0;
}