find the nth digit

 1 #include <stdio.h>
 2 
 3 int main(){
 4     int T;
 5     int number;
 6     int i;
 7     
 8     scanf("%d",&T);
 9     
10     while(T--){
11         scanf("%d",&number);
12         
13         i=1;
14         while(1){
15             if(number>i){
16                 number-=i;
17                 i++;
18             }
19             
20             else            
21                 break;
22         }
23         
24         number%=9;
25         
26         if(number==0)
27             number=9; 
28             
29         printf("%d\n",number);
30     }
31     
32     return 0;
33 }