# 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`循环生成数字（由用户输入）的乘法表的示例。

要理解此示例，您应该了解以下 [C++ 编程](/cpp-programming "C++ tutorial")主题：

*   [C++ `for`循环](/cpp-programming/for-loop) 

* * *

## 示例 1：显示最多 10 个乘法表

```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;
}
```

**输出**

```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计算 10 个乘法表。

下面的程序是对上面程序的修改，其中还要求用户输入显示乘法表的范围。

## 示例 2：显示到给定范围的乘法表

```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;
}
```

**输出**

```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
```