#include int main() { int i,k,n,t; double ans; scanf("%d",&n); ans = 0; t = 1; k = 1; for(i = 1; i 再问: 输入输出示例 Enter n;3 sum=0.893 要这个版式,谢谢 再答: #include int main() { int i, k, n, t; double ans; printf("Enter n:"); scanf("%d", &n); ans = 0; t = 1; k = 1; for(i = 1; i