杭电2061-优快云博客

本文链接：https://blog.youkuaiyun.com/KingsCC/article/details/81396619

//不知道为啥不能写成长为51的数组，会爆Runtime Error (ACCESS_VIOLATION)的错我太菜了看不出为啥会越界

原代码：

#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include<string>
using namespace std;
struct cl{
   char cn[33];
   float c, s;
}cla[51];
void main()
{
   int n;
   while (cin >> n)
   {
       while (n--)
       {
           int k;
           bool flag=true;
           double sum1 = 0.0, sum2 =0.0, res = 0.0;
           cin >> k;
           for (int i = 0; i < k; i++)
           {
               cin >> cla[i].cn >> cla[i].c >> cla[i].s;
               if (cla[i].s < 60 && cla[i].s >= 0)
                   flag = false;
               sum1 += cla[i].c * cla[i].s;
               sum2 += cla[i].c;
           }
           if (!flag)
           {
               puts("Sorry!");
           }
           else{
               res = sum1 / sum2;
               printf("%.2lf\n", res);
           }
           if (n)
               printf("\n");
       }
   }
}

ac代码：

#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include<string>
using namespace std;
struct cl{
   char cn[33];
   float c, s;
};
void main()
{
   int n;
   while (cin >> n)
   {
       while (n--)
       {
           int k;
           cl cla;
           bool flag=true;
           double sum1 = 0.0, sum2 =0.0, res = 0.0;
           cin >> k;
           for (int i = 0; i < k; i++)
           {
               cin >> cla.cn >> cla.c >> cla.s;
               if (cla.s < 60 && cla.s >= 0)
                   flag = false;
               sum1 += cla.c * cla.s;
               sum2 += cla.c;
           }
           if (!flag)
           {
               puts("Sorry!");
           }
           else{
               res = sum1 / sum2;
               printf("%.2lf\n", res);
           }
           if (n)
               printf("\n");
       }
   }
}