pat乙级1059

1、c++ 位数不够前面补零：

 printf("04d", i);

位数不够前面补空格（右对齐）：

 printf("4d", i);

位数不够后面补空格（左对齐）：

printf("-4d", i);

code:

 #include <iostream>
 #include <string>
 #include <math.h>
 using namespace std;
 bool isSushu(int i)
 {
     if (i < ) return false;
     int t = sqrt(i);
     for (int j = ; j <= t; j++)
     {
         if (i % j == ) return false;
     }
     return true;
 }
 int main()
 {
     int n;
     cin >> n;
     int arr[] = {};
     string award[] = { "Are you kidding?", "Mystery Award", "Minion", "Chocolate", "Checked" };
     for (int i = ; i < n; i++)
     {
         int id;
         cin >> id;
         if (i == ) arr[id] = ;
         else if (isSushu(i + )) arr[id] = ;
         else arr[id] = ;
     }
     int k;
     cin >> k;
     for (int i = ; i < k; i++)
     {
         int id;
         cin >> id;
         printf("%04d: %s\n", id, award[arr[id]].c_str());
         if (arr[id] > ) arr[id] = ;
     }
     return ;
 }