PTA——6-7 统计某类完全平方数

 1 #include <stdio.h>
 2 #include <math.h>
 3 
 4 int IsTheNumber ( const int N );
 5 
 6 int main()
 7 {
 8     int n1, n2, i, cnt;
 9     scanf("%d %d", &n1, &n2);
10     cnt = 0;
11     for ( i=n1; i<=n2; i++ ) {
12         if ( IsTheNumber(i) )
13             cnt++;
14     }
15     printf("cnt = %d\n", cnt);
16     return 0;
17 }
18 
19 int IsTheNumber ( const int N ){
20     int n, p, t;
21     t = N;
22     n = (int)sqrt(N);
23     if( N == n*n ){
24         int a[10] = {0};            
25         while(t){
26             p = t%10;
27             if(!a[p]){
28                 a[p] = 1;
29             }else{
30                 return 1;
31             }
32             t /= 10;
33             }
34         }
35     return 0;
36 }