Question

1) Write an algorithm to calculate the sum of the following series:
          Sum =x-x3/3! + x5/5! – x7/7! +…….     Stop when the                     term<0.0001.

   2) An internet service provider charges its subscribers per month as follows:
          Data usage (n), in gbs           charges (NIS)
          0.0<n<=1.0                                250
          1.0<n<=2.0                                500
          2.0<n<=5.0                              1000
          5.0<n<=10.0                            1500
                  n>10                                 2000
         Write a C program to read the usage(n) from a file and print the charges to be paid by the subscribers.
          Your program must include the function calculate that accept the data usage (n) and returns the charge/month.

**please i need a unique answer
i dont want copy one

Answer 1

Please give positive ratings for my efforts. Thanks.

ANSWER

#include<stdio.h>
#include<math.h>

int main() 
{ 
    float n;
    printf("Enter the valu of x :  ");
    scanf("%f",&n);

        float acc = 0.0001, den, sinx, sinval; 
        
        n = n * (3.142 / 180.0); 

        float x1 = n; 
        
        sinx = n;                
        
        sinval = sin(n);         
        int i = 1; 
        do
        { 
                den = 2 * i * (2 * i + 1); 
                x1 = -x1 * n * n / den; 
                sinx = sinx + x1; 
                i = i + 1; 
        } while (acc <= fabs(sinval - sinx)); 
        
        printf("\nResult :  %f",sinx); 
}