(C++) CPP Programs - 17

17. Write a C program to evaluate the given polynomial,

p(x) = a_nxⁿ + a_n-1x^n-1 + a_n-2x^n-2………….+ a₁x + a₀, by reading its co-efficient into an array.

[HINT: rewrite the polynomial as

p(x) = a₀+x(a₁+x(a₁+x(a₂+x(a₃+x(a₄+…………..x(a_n-1+xa_n)))))

and evaluate the function starting from inner loop.]

/*Polynomial*/

#include

#include

#include

void main()

{

float a[34],psum=0,term,x;

int i,n;

clrscr();

printf("Enter the value for x\n");

scanf("%f",&x);

printf("Enter the n value\n\a");

scanf("%d",&n);

printf("Enter the %d co-efficients\n",n+1);

for(i=0;i < = n;i++)

scanf("%f",&a[i]);

for(i=n;i >= 0;i--)

{

term=a[i]*pow(x,i);

psum+=term;

}

printf("The sum of polynomial of given terms=%f\n",psum);

getch();

}