Question

How to check if an integer include specific digits x times in C

Answer 1

#include <stdio.h>
 
int integer_include_digit_x_times(int n, int xtims, int digit) {
    int count = 0;
         
    while (n > 0) {
        if (n % 10 == digit)
            count++;
        n = n / 10;
    }
         
    return count == xtims;
}
 
int main(void)
{
    int n;
  
    printf("%d\n", integer_include_digit_x_times(7097175, 3, 7));
     
    printf("%d\n", integer_include_digit_x_times(70975, 3, 7));
 
    return 0;
}
  
  
  
/*
run:
  
1
0
  
*/

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