Dry running this program
This is a program to find answer of sinx function. I've dry run this program but i'm quite confused.
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#include<iostream>
using namespace std;
int main()
{
int i,j,n,fact,sign=-1;
float x=0, p=0,sum=0;
cout<<"Enter the value of x : ";
cin>>x;
cout<<"Enter the number of terms : ";
cin>>n;
for(i=1;i<=n;i=i+2)
{
p=1;
fact=1;
for(j=1;j<=i;j++)
{
p=p*x;
fact=fact*j;
}
sign=-1*sign;
sum=sum+(sign*p/fact);
}
cout<<"sin "<<endl;
cout<<sum;
system("pause");
return 0;
}
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I might be wrong but it looks like the code computes the Taylor expansion coefficient for sin(x), isn't it?
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