while中同时使用scanf和break的易错点

 1 #include <iostream>
 2 #include <cstdio>
 3 using namespace std;
 4 /* run this program using the console pauser or add your own getch, system("pause") or input loop */
 5 
 6 int main(int argc, char** argv) {
 7     int n, difficulty;
 8     bool flag = true;
 9     while(scanf("%d", &n) != EOF){
10         while(n){
11             n--;
12             scanf("%d", &difficulty);
13             if(difficulty){
14                 flag = false;
15                 //break;不可以写break，一旦写了break，一遇到1就跳出，输入行的1后的其余部分被认为是下次输入 
16             }
17         } 
18         if(!flag)
19            printf("HARD\n");
20         else
21            printf("EASY\n");
22            flag = true; 
23     }
24 }