십진수 수에서 '0' 개수 세기

#include <stdio.h>

int DecimalZeroCount(int _n)

{

int n = _n;

int count0 = 0;

int count_not0 = 0;

do {

if ((n % 10) == 0) { // remain is 0

count0++;

}

else {                 // remain is not 0

count_not0++;

}

} while ((n /= 10) != 0);

return count0;

}

void main()

{

printf("1000 : %d\n", DecimalZeroCount(1000));

printf("2134120 : %d\n", DecimalZeroCount(2134120));

printf("1234900 : %d\n", DecimalZeroCount(1234900));

printf("1321313 : %d\n", DecimalZeroCount(1321313));

printf("100320 : %d\n", DecimalZeroCount(100320));

printf("10002000 : %d\n", DecimalZeroCount(10002000));

printf("100000330 : %d\n", DecimalZeroCount(100000330));

printf("1000010000 : %d\n", DecimalZeroCount(1000010000));

printf("01 : %d\n", DecimalZeroCount(01));

printf("0 : %d\n", DecimalZeroCount(0));

}