题解 | 小乐乐改数字

#include <stdio.h>
#include <math.h>
int main() {
    long n = 0, m = 0, t = 0, z = 0;
    scanf("%ld", &n);
    while (n != 0)
    {
        m = (n % 2 == 0) ? 0 : 1;
        n = (n - n % 10)/10;
        t++;
        z = z + m * pow(10, t - 1);
    }
    printf("%ld", z);
    return 0;
}