一開始程式碼中是不含有#include<string.h>，後面百度memset在此作用域尚未宣告，將標頭檔案 #include<string> 改為 #include<string.h>

另附題目連結 https://www.luogu.com.cn/problem/P1618

#include<iostream>
#include<cmath>
#include<cstdio>
#include<algorithm>
#include <string.h>
using namespace std;
int
 
 ha[10];

void check1(int t)
{
    ha[t / 100] = 1;
    ha[t / 10 % 10] = 1;
    ha[t % 10]=1;
}
bool check(int x, int y, int z)
{
    /*for (int i = 1; i <= 9; i++)
        ha[i] = 0;*/
    memset(ha, 0, sizeof(ha));
    if (y > 999|| z>999)
        return 0;
    check1(x);
    check1(y);
    check1(z);
    
 
for (int i = 1; i <= 9; i++)
    {
        if (ha[i] == 0)
            return 0;
    }
    return 1;

}
int main() 
{
    int A, B, C;
    int x, y, z;
    int sum = 0;
    cin >> A >> B >> C;
    for (int x = 123; x <= 987; x++)
    {
        if (x * B % A || x * C % A)    continue
 
;
        y = x * B / A;
        z = x * C / A;
        if (check(x, y, z))
        {
            cout << x<<" " << y << " " << z << endl;
            sum++;
        }
    }
    if (sum == 0)    cout << "No!!!" << endl;
    return 0;
}

本文來自部落格園，作者：magicat，轉載請註明原文連結：https://www.cnblogs.com/magicat/p/15061019.html