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;
}
