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