# C++ 程序：生成乘法表 > 原文： [https://www.programiz.com/cpp-programming/examples/multiplication-table](https://www.programiz.com/cpp-programming/examples/multiplication-table) #### 使用`for`循環生成數字（由用戶輸入）的乘法表的示例。 要理解此示例，您應該了解以下 [C++ 編程](/cpp-programming "C++ tutorial")主題： * [C++ `for`循環](/cpp-programming/for-loop) * * * ## 示例 1：顯示最多 10 個乘法表 ```cpp #include <iostream> using namespace std; int main() { int n; cout << "Enter a positive integer: "; cin >> n; for (int i = 1; i <= 10; ++i) { cout << n << " * " << i << " = " << n * i << endl; } return 0; } ``` **輸出** ```cpp Enter an integer: 5 5 * 1 = 5 5 * 2 = 10 5 * 3 = 15 5 * 4 = 20 5 * 5 = 25 5 * 6 = 30 5 * 7 = 35 5 * 8 = 40 5 * 9 = 45 5 * 10 = 50 ``` 上面的程序最多只能計算 10 個乘法表。 下面的程序是對上面程序的修改，其中還要求用戶輸入顯示乘法表的范圍。 ## 示例 2：顯示到給定范圍的乘法表 ```cpp #include <iostream> using namespace std; int main() { int n, range; cout << "Enter an integer: "; cin >> n; cout << "Enter range: "; cin >> range; for (int i = 1; i <= range; ++i) { cout << n << " * " << i << " = " << n * i << endl; } return 0; } ``` **輸出** ```cpp Enter an integer: 8 Enter range: 12 8 * 1 = 8 8 * 2 = 16 8 * 3 = 24 8 * 4 = 32 8 * 5 = 40 8 * 6 = 48 8 * 7 = 56 8 * 8 = 64 8 * 9 = 72 8 * 10 = 80 8 * 11 = 88 8 * 12 = 96 ```