Input Format
輸入一整數n
Output Format
輸出計算1/1! + 2/2! + 3/3! + .... + n/n!的結果，取至小數點第五位
user_6817964
c_cpp
3 years ago
249 B
3
Indexable
#include <stdio.h> // printf
int main()
{
int n;
scanf_s("%d", &n);
float total = 0;
for (float i = 1; i <= n; i++) {
float mul = 1;
for(int j = 1; j <= i; j++)
mul *= j;
total += (i / mul);
}
printf("%6.5f", total);
}
