一个刷题系统显示部分正确，请修正🙏

Question

#include<stdio.h>
int main()
{
int i,m,n,flag=0;
scanf("%d %d",&m,&n);
for(i=m;i<=n;i++)
{
if(i%3==0&&(i%10==5||i/10==5||i/100==5||i/1000==5))
{
if(flag==0)
printf("%d",i);

if(flag==1)
printf(" %d",i);
 flag=1;
}
}
 if(flag==0)
printf("No exist");
return 0;

}

Answer 1

#include <stdio.h>

int has_five(int x)
{
    while (x)
    {
        if (x % 10 == 5)
            return 1;
        x /= 10;
    }
    return 0;
}

int main()
{
    int m, n;
    scanf("%d%d", &m, &n);
    int found = 0;
    for (int i = m; i <= n; i++)
    {
        if (i % 3 == 0 && has_five(i))
        {
            if (found)
                printf(" ");
            printf("%d", i);
            found = 1;
        }
    }
    if (!found)
        printf("No exist");
    return 0;
}