求符合给定条件的整数集

 1 /*
 2     求符合给定条件的整数集
 3 */
 4 
 5 #include <stdio.h>
 6 
 7 int main()
 8 {
 9     int n;
10     int cnt = 0;
11     int hundred, ten, unit;
12 
13     scanf_s("%d", &n);
14     
15     for (int i = 100; i < 1000; i++)
16     {
17         hundred = i / 100;
18         ten = i % 100 / 10;
19         unit = i % 10;
20 
21         if (hundred == ten || ten == unit || hundred == unit)
22         {
23             continue;
24         }
25 
26         if (hundred >= n && hundred <= n+3)
27         {
28             if (ten >= n && ten <= n + 3)
29             {
30                 if(unit >= n && unit <= n + 3)
31                 {
32                     printf("%d", i);
33                     cnt++;
34                     if (cnt < 6)
35                     {
36                         printf(" ");
37                     }
38                     else
39                     {
40                         if (cnt == 6)
41                         {
42                             printf("
");
43                             cnt = 0;
44                         }
45                     }
46                 }
47             }            
48         }
49     }
50 
51     return 0;
52 }

修改版

 1 #include <stdio.h>
 2 
 3 int main()
 4 {
 5     int a;
 6     scanf_s("%d", &a);
 7     int i, j, k;
 8     int cnt = 0;
 9 
10     for (i = a; i <= a+3; i++)
11     {
12         for (j = a; j <= a + 3; j++)
13         {
14             for (k = a; k <= a + 3; k++)
15             {
16                 if (i != j && j != k && i != k)
17                 {
18                     printf("%d", i * 100 + j * 10 + k);
19                     cnt++;
20                     if (cnt < 6)
21                     {
22                         printf(" ");
23                     }
24                     else
25                     {
26                         if (cnt == 6)
27                         {
28                             printf("
");
29                             cnt = 0;
30                         }
31                     }
32                 }
33             }
34         }
35     }
36 
37     return 0;
38 }