# C++ 程序：打印数字的空心盒子图案 > 原文：写一个 C++ 程序来打印数字的空心盒子图案。在这个 C++ 例子中，嵌套 for 循环打印行和列数字。 ```cpp #include using namespace std; int main() { int rows, columns, i, j; cout << "\nPlease Enter the Number of Rows = "; cin >> rows; cout << "\nPlease Enter the Number of Columns = "; cin >> columns; cout << "\n---Hollow Box Number Pattern----\n"; for(i = 1; i <= rows; i++) { for(j = 1; j <= columns; j++) { if(i == 1 || i == rows || j == 1 || j == columns) { cout << j << " "; } else { cout << " "; } } cout << "\n"; } return 0; } ``` ![C++ Program to Print Hollow Box Number Pattern](img/5d5a2d58f2a75cfe6a3f2a8d2f4e5c7f.png) 在这个 C++ 空心盒子数字图案程序中，我们允许用户输入他/她自己的行和列的数字。 ```cpp #include using namespace std; int main() { int rows, columns, i, j; cout << "\nPlease Enter the Number of Rows = "; cin >> rows; cout << "\nPlease Enter the Number of Columns = "; cin >> columns; cout << "\n---Hollow Box Number Pattern----\n"; for(i = 1; i <= rows; i++) { for(j = 1; j <= columns; j++) { if(i == 1 || i == rows || j == 1 || j == columns) { cout << i << " "; } else { cout << " "; } } cout << "\n"; } return 0; } ``` ```cpp Please Enter the Number of Rows = 9 Please Enter the Number of Columns = 15 ---Hollow Box Number Pattern---- 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 ``` ## 用 while 循环打印数字的空心盒子图案的 C++ 程序 ```cpp #include using namespace std; int main() { int rows, columns, i, j; cout << "\nPlease Enter the Number of Rows = "; cin >> rows; cout << "\nPlease Enter the Number of Columns = "; cin >> columns; cout << "\n---Hollow Box Number Pattern----\n"; for(i = 1; i <= rows; i++) { for(j = 1; j <= columns; j++) { if(i == 1 || i == rows || j == 1 || j == columns) { cout << j << " "; } else { cout << " "; } } cout << "\n"; } return 0; } ``` ```cpp Please Enter the Number of Rows = 12 Please Enter the Number of Columns = 20 ---Hollow Box Number Pattern---- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 20 1 20 1 20 1 20 1 20 1 20 1 20 1 20 1 20 1 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ```

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