C++求1!+2!+3!+...+n!
时间: 2023-08-06 09:04:05 浏览: 79
要求求解1!+2!+3!+...+n!的和,可以使用循环来计算每个数的阶乘,并将它们相加。以下是一个C++的示例代码:
```cpp
#include <iostream>
using namespace std;
int factorial(int num) {
int result = 1;
for (int i = 1; i <= num; i++) {
result *= i;
}
return result;
}
int main() {
int n;
cout << "Enter n: ";
cin >> n;
int sum = 0;
for (int i = 1; i <= n; i++) {
sum += factorial(i);
}
cout << "The sum is: " << sum << endl;
return 0;
}
```
在这个代码中,我们定义了一个函数`factorial`来计算一个数的阶乘。然后,在`main`函数中,我们使用循环来计算每个数的阶乘,并将它们相加得到最终的和。最后,我们输出结果。
希望这个代码可以帮助你解决问题!\[1\]\[3\]
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