31 lines
723 B
Markdown
31 lines
723 B
Markdown
|
# 原创
|
|||
|
|
： C++实现随机产生一个二维数组
|
|||
|
|
|
|||
|
|
# C++实现随机产生一个二维数组
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
#include <iostream>
|
|||
|
|
#include <stdlib.h>
|
|||
|
|
#include <time.h>
|
|||
|
|
using namespace std;
|
|||
|
|
|
|||
|
|
int main() {
|
|||
|
|
int n, m; //行数n和列数m
|
|||
|
|
cin >> n >> m;
|
|||
|
|
srand((unsigned)time(NULL));
|
|||
|
|
|
|||
|
|
for (int i = 0; i < n; i++)
|
|||
|
|
{
|
|||
|
|
for (int i = 0; i< m; i++)
|
|||
|
|
{
|
|||
|
|
cout << (rand() % 900) + 100 << " ";
|
|||
|
|
//要取得[a,b)的随机整数，使用(rand() % (b-a))+ a;
|
|||
|
|
//要取得[a,b]的随机整数，使用(rand() % (b-a+1))+ a;
|
|||
|
|
//要取得(a,b]的随机整数，使用(rand() % (b-a))+ a + 1;
|
|||
|
|
}
|
|||
|
|
cout << endl;
|
|||
|
|
}
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
```
|