题解 | #小乐乐改数字#
小乐乐改数字
https://www.nowcoder.com/practice/fcd30aac9c4f4028b23919a0c649824d
#include <stdio.h> #include <math.h> int main() { int n = 0; scanf("%d", &n); int i = 0; int a = 0; int k = 1; while(n) { if (n % 2 == 1) { a = a + k; } i++; k= k * 10; n = n / 10; } printf("%d", a); return 0; }