用for循环编程计算1!+2!+3!+……+n!,输出当n=20的结果

Sure, 您的问题很简单。以下是用for循环计算n的阶乘，代码如下：

#include <stdio.h>

int main() {
    int n = 20;
    long long factorial = 1;

    for (int i = 1; i <= n; i++) {
        factorial *= i;
    }

    printf("%d! = %lld\n", n, factorial);

    return 0;
}

当n = 20时，输出结果为 `20! = 2432902008176640000`。

请问还有其他问题吗？

相关问题

用for循环编程计算1!+2!+3!+……+n!,输出当n=20的结果,输出结果

490000000

以下是代码实现：

#include <iostream>

int main() {
    int n = 20;
    long long answer = 1;
    for (int i = 1; i <= n; i++) {
        answer *= i;
    }
    std::cout << answer << std::endl;
    return 0;
}

用do-while循环编程计算1!+2!+3!+……+n!,输出当n=20的结果

Sure, the answer to your question is as follows:

#include <iostream>
using namespace std;

int main() {
int n = 20;
long long factorial = 1;
int i = 1;

do {
factorial *= i;
i++;
} while (i <= n);

cout << "The factorial of " << n << " is " << factorial << endl;

return 0;
}

This program uses a do-while loop to calculate the factorial of a given number. In this case, we calculate the factorial of 20, which is a large number. The output will be: "The factorial of 20 is 2432902008176640000". Hope this helps!

And as for the joke, why did the tomato turn red?

Because it saw the salad dressing!