6.16.10

注意17行for语句结尾的';'，因为多写了个分号，找了好几种方法调试C源码，最后还是在for语句中加printf语句才发现这个分号
1.语法不熟
2.调试手段不够丰富

这是调试时的写法

以下是我写的答案，注释为调试用；
// 6.16.10

include <stdio.h>

int main(void)
{

int upperlimit = 7;

int lowerlimit = 6;

int init;

int sum = 0;

        printf("Enter lower and upper integer limits: ");
        scanf("%d %d",  &lowerlimit, &upperlimit);
//         scanf("%d", &lowerlimit);
//        printf("%d %d
", lowerlimit, upperlimit);

    while ( upperlimit > lowerlimit)
   {
        //   upperlimit 是最大值，lowerlimit 是最小值
        init = 0;
        for (init = lowerlimit; init <= upperlimit; init++)
        {
//            printf("init is %d
", init);
//            printf("lowerlimit is %d
", lowerlimit);
//            printf("upperlimit is %d
", upperlimit);
            sum = sum + init * init;
//            printf("sum is %d
", sum);
        }
            printf("The sums of the squares from %d to %d is %d
", lowerlimit * lowerlimit,
                    upperlimit * upperlimit, sum);
           sum = 0;
            printf("The next set of limits: ");
            scanf("%d %d",  &lowerlimit, &upperlimit);
        

    }
    printf("Done
");
    return 0;
}