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