factorial(newbie Q,please heeellp)
Hi,
I am at beginning stage of VC++,and stumped on this question.Find the total of number of factorials ,user inputs.
For eg. user says 5,
ans = 1!+2!+3!+4!+5!
I have done this,but confused where I am going wrong....
#include<iostream>
using std::cin;
using std::cout;
using std::endl;
int main()
{
int num,ans,x,y,answer;
ans=1;
answer=0;
cout<<"enter any integer"<<endl;
cin>>num;
if (num<0)
{
cout<<"u have entered nonnegative integer"<<endl;
}
else if (num==0)
{
cout<<"the"<<num<<"factorial is"<<"1"<<endl;
}
else if (num>0)
{
for(y=1;y<=num;y++)
{
for(x=y;x>=1;x--)
{
ans=x*ans;
}
}
answer=answer+ans;
cout<<"the value of mathematical constant is:"<<answer<<endl;
}
return 0;
}
I will be really grateful,if anybody points me out the right track.
Thankx