41 lines
794 B
C++
41 lines
794 B
C++
#include <iostream>
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#include <cstdlib>
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using namespace std;
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int main()
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{
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int rows = 1;
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cout << "请输入行数: ";
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cin >> rows;
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int arr[rows][3] = {}; // ?变量是否可以作为定义数组时的维度
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int num;
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int j = rows;
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while (j)
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{
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for (int i = 0; i < 3; i++)
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{
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cout << "请输入值: ";
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cin >> arr[rows - j][i];
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// break 结束 for 循环
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// 如何结束外部的 while 循环
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if (arr[rows - j][i] == -1)
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// break;
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goto show;
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}
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j--;
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}
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show:
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for (int i = 0; i < rows; i++)
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{
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for (int j = 0; j < 3; j++)
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{
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cout << arr[i][j] << "\t";
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}
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cout << endl;
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}
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return 0;
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} |