题解 | #小乐乐改数字#

#include <stdio.h>
#include <string.h>

void  change(int math,int n,int fin[100])
{
    int i = 0;
    for (n; n > 0; n--)
    {
        int a = n;
        int b=1;
        for (a; a-1 > 0; a--)
            b = b * 10;
        fin[i] = math / b;
       
        if (fin[i] % 2 == 0)
          fin[i] = 0;
       else
            fin[i] = 1;
        ++i;
    }
   

}
int main()
{
    int math = 0, n=1;
    scanf("%d",& math);
    
    int maths = math;
    while (math > 1)
    {
        math = math / 10;
        n++;
    }
    int n1 = n;
    int fin[100] = {};
    change(maths, n,fin);
   
    int flag = 0;
    for (int i = 0; i < n1; i++)
    {
        
        if (fin[i] != 0)
            flag = 1;
        if(flag==1)
        printf("%d", fin[i]);
        
    }
    if (flag == 0)
        printf("0");
        return 0;
}