循环方法:
#include <stdio.h>
int main() {
int n = 8; // 计算1到8阶乘的和
int sum = 0;
int factorial = 1;
for (int i = 1; i <= n; i++) {
factorial *= i;
sum += factorial;
}
printf("1到%d阶乘的和为:%d\n", n, sum);
return 0;
}
递归方法:
#include <stdio.h>
int factorial(int n) {
if (n == 1) {
return 1;
} else {
return n * factorial(n - 1);
}
}
int main() {
int n = 8; // 计算1到8阶乘的和
int sum = 0;
for (int i = 1; i <= n; i++) {
sum += factorial(i);
}
printf("1到%d阶乘的和为:%d\n", n, sum);
return 0;
}