c++ - 我不明白为什么我生成的随机数没有正确存储

Question

我正在制作一个程序，它为某人输入的一定数量的数字生成一个随机的 x 和 y 点。由于某种原因，我的随机数没有正确存储在数组中。我在生成点的循环中输出数组，在 for 循环的末尾输出数组，y 坐标不相同:

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

int main() {


srand((unsigned)time(0)); 

int mounds =0;


//prompt for number of mounds, uncertainty, and number of sites
cout <<"Please enter the number of mounds at the site: ";
cin >> mounds;


//declaration of an array that will hold the x and y for each mound
int moundArray [mounds][1];


    for(int i =0; i < mounds; i++)
    {
        //generate a random x
        moundArray [i][0] = rand()%1331;
        cout <<"You just generated an x of: " << moundArray [i][0] << endl;
        //sleep(1);


        //generate a random y
        moundArray [i][1] = rand()%1743;
        cout <<"You just generated a y of: " << moundArray [i][1] << endl;
        //sleep(1);

    }



    //for loop to display my results
    for(int j =0; j < mounds; j++)
    {

        cout <<"random x: " << moundArray [j][0] << endl;
        cout <<"random y: " << moundArray [j][1] << endl;
    }



return 0;
}

Answer 1

我很惊讶你没有在执行时崩溃。此处的这一行应该是您的问题:

int moundArray [mounds][1];

如果第二个索引的大小仅为 [1]，则元素 [0] 是唯一可访问的有效元素。尝试将其增加到 2。