c語言階乘求和怎麽寫

拓展：除了C語言，還可以使用Python、JavaScript等語言來求階乘求和，代碼如下：Python：def factorial(n): res = 1 while n > 0: res *= n n -= 1 return resdef sum_factorial(n): res = 0 for i in range(1, n+1): res += factorial(i) return resn = int(input())print(sum_factorial(n))JavaScript：function factorial(n) { let res = 1; while (n > 0) { res *= n; n--; } return res;}function sumFactorial(n) { let res = 0; for (let i = 1; i