用while或者do while求n!的值,其中n由键盘输入
时间: 2023-05-19 17:02:59 浏览: 45
非常好的问题!以下是使用while循环计算n!的代码:
```
#include <stdio.h>
int main() {
int n, i = 1, factorial = 1;
printf("请输入一个正整数n:");
scanf("%d", &n);
while (i <= n) {
factorial *= i;
i++;
}
printf("%d! = %d\n", n, factorial);
return 0;
}
```
以下是使用do while循环计算n!的代码:
```
#include <stdio.h>
int main() {
int n, i = 1, factorial = 1;
printf("请输入一个正整数n:");
scanf("%d", &n);
do {
factorial *= i;
i++;
} while (i <= n);
printf("%d! = %d\n", n, factorial);
return 0;
}
```
希望这能帮到你!
相关问题
用while或者do while求n的阶乘的值,期中n由键盘输入
以下是用while循环求n的阶乘的代码:
```
#include <stdio.h>
int main() {
int n, i = 1, fact = 1;
printf("请输入一个正整数n:");
scanf("%d", &n);
while (i <= n) {
fact *= i;
i++;
}
printf("%d的阶乘是%d\n", n, fact);
return 0;
}
```
以下是用do while循环求n的阶乘的代码:
```
#include <stdio.h>
int main() {
int n, i = 1, fact = 1;
printf("请输入一个正整数n:");
scanf("%d", &n);
do {
fact *= i;
i++;
} while (i <= n);
printf("%d的阶乘是%d\n", n, fact);
return 0;
}
```
希望能对您有所帮助!
从键盘输入一个不大于20的正整数n,分别用while、do-while和for语句计算n!
好的,我会根据您的要求回答您的问题。下面是三个不同的方法计算n!:
使用while循环计算n!
```
#include <stdio.h>
int main()
{
int n, i = 1, product = 1;
printf("请输入一个不大于20的正整数n:");
scanf("%d", &n);
while (i <= n) {
product *= i;
i++;
}
printf("%d! = %d\n", n, product);
return 0;
}
```
使用do-while循环计算n!
```
#include <stdio.h>
int main()
{
int n, i = 1, product = 1;
printf("请输入一个不大于20的正整数n:");
scanf("%d", &n);
do {
product *= i;
i++;
} while (i <= n);
printf("%d! = %d\n", n, product);
return 0;
}
```
使用for循环计算n!
```
#include <stdio.h>
int main()
{
int n, i, product = 1;
printf("请输入一个不大于20的正整数n:");
scanf("%d", &n);
for (i = 1; i <= n; i++) {
product *= i;
}
printf("%d! = %d\n", n, product);
return 0;
}
```