Write a program to compute sinx for given x. The user should supply x and a positive integer n. We compute the sine of x using the series and the computation should use all terms in the series up through the term involving x sin x = x - x3/3! + x5/5! - x7/7!+x9/9! .........

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Assignments » Flow Of Control » Set 3 » Solution  2

Source Code

#include<iostream>
using namespace std;

int main()
{
 int i,j,n,fact,sign=-1;
 float x, p,sum=0;
 cout<<"Enter the value of x : ";
 cin>>x;
 cout<<"Enter the value of n : ";
 cin>>n;

 for(i=1;i<=n;i+=2)
 { 
  p=1;
                fact=1;
  for(j=1;j<=i;j++)
  {
   p=p*x;
   fact=fact*j;
  }
  sign=-1*sign;
  sum+=sign*p/fact;
 }
 cout<<"sin "<<x<<"="<<sum;

 
 return 0;


}

  The Output Is:  


Enter the value of x : 1
Enter the value of n : 10
sin 1 = 0.841471