C program to evaluate: r= 1/3{x+3(x^3)+9(x^9)}"); 1/2{x+2(x^2)+4(x^4)}");

#include<stdio.h>     

#include<math.h>

//float
power(float,int);

int main()

{

             double x,res;

             int choice;

             printf("Enter your choice\n");

             printf("1: For r=
1/3{x+3(x^3)+9(x^9)}\n\n");

             printf("2: For r=
1/2{x+2(x^2)+4(x^4)}\n\n");

             scanf("%d",&choice);

             printf("Enter the value of : X   \n");

             scanf("%lf",&x);







             /*SWITCH-CASE BEGINS*/




             switch(choice)

             {

                        case 1:

                                                res=(x+(3*pow(x,3))+(9*pow(x,9)))/3;

                                                printf("r
= 1/3{%lf+3(%lf^3)+9(%lf^9)}",x,x,x);

                                                break;

                        case 2:

                                                res=(x+(2*pow(x,2))+(4*pow(x,4)))/3;

                                                printf("r
= 1/2{%lf+2(%lf^2)+4(%lf^4)}",x,x,x);

                                                break;

             }

             /*SWITCH-CASE ENDS*/







             printf("The result of the operation is
%lf \n",res);




             getch();

             return 0;

}