如题所述
C语言阶乘求和的写法如下：int i, n;long long sum;sum = 0;scanf("%d", &n);for(i=1; i<=n; i++){ sum += factorial(i);}printf("%lld", sum);long long factorial(int n){ long long result = 1; int i; for (i = 1; i <= n; i++) { result *= i; } return result;}
拓展：除了C语言，还可以使用Python、JavaScript等语言来求阶乘求和，代码如下：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 <= n; i++) { res += factorial(i); } return res;}let n = parseInt(prompt());console.log(sumFactorial(n));
拓展：除了C语言，还可以使用Python、JavaScript等语言来求阶乘求和，代码如下：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 <= n; i++) { res += factorial(i); } return res;}let n = parseInt(prompt());console.log(sumFactorial(n));
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