How to resolve a polynomial function.

How to resolve a polynomial function.

Example in 3 elements. 

F(x) =x^n+a_(n-1)*x^(n-1)+... +a1*x+a0

#include <stdio.h >

#include <math.h >

int main()

{

  int f, n, a[3],x;

  printf("Insert 3 elements (a) :") ;

  for(i =1;i<=3;i++)

   {

     scanf("%i", a[i]) ;

   }

   printf("\nInsert n elements :") ;

   scanf("%i", n) ;

   printf("\nInsert x variable :") ;

   scanf("%i", x) ;

   for(i=1;i<=3;i++)

   {

   f+=pow(x, n) +a[n-1]*pow(x,n-1);

   n-=1;

   }

   f+=a[0];

  printf("\nThe result of polynomial function is:%i", f) ;

 return 0 ;

}

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