Viết chương trình con: 1/1!+1/2!+...n/n!

#include<bits/stdc++.h>
using namespace std;
int giaithua(int n)
{
    int total=1;
    for(int i=1;i<n;i++){
        total*=i;
    }
    return total;
}
int main()
{
    float n,total=0;
    cin>>n;
    for(float i=1;i<n;i++){
        total+=1/(float)giaithua(i);
    }
    cout<<total;
    //samon247
    return 0;
}

uses crt;
var n : integer;
function gt( K : integer) : real;
var i,j,s : integer;
m : real;
begin clrscr;
for i:=1 to n do begin s:=1;
for j:=1 to i do s:=s*j;
m:=m+1/s end;
gt:=m;
end;
begin clrscr;
write('Nhap n:'); readln(n);
write('Tong do la :', gt(n):2:3);
readln
end.