求解正确答案还有我怎么错了

Question

Answer 1

#include <stdio.h>
int IsSquare(int n)
{
    int i, flag = 0;
    for (i = 0; i <= n; i++)
    {
        if (i * i == n)
            flag = 1;
    }
    return flag;
}
int main()
{
    int n, i = 1;
    scanf("%d", &n);
    while (1)
    {
        if (IsSquare(n * i) == 1)
        {
            printf("%d", i);
            break;
        }
        i++;
    }
    return 0;
}