Calculate the Sum

Write a C program to calculate the following Sum:Sum=1-x2/2! +x4/4!-x6/6!+x8/8!-x10/10!*/

#include <stdio.h>

#include <math.h>

void main()

{

int counter,f_coun;

float sum=0,x,power,fact;

clrscr();

printf("<-----------------------PROGRAM FOR SUM OF EQ. SERIES----------------------->");

printf("\n\n\tEQUATION SERIES : 1- X^2/2! + X^4/4! - X^6/6! + X^8/8! - X^10/10!");

printf("\n\n\n\tENTER VALUE OF X : ");

scanf("%f",&x);

for(counter=0, power=0; power<=10; counter++,power=power+2)

{

fact=1;

//CALC FACTORIAL OF POWER VALUE

for(f_coun=power; f_coun>=1; f_coun--)

        fact *= f_coun;

//EQ. FOR SUM SERIES

sum=sum+(pow(-1,counter)*(pow(x,power)/fact));

}

printf("SUM : %f",sum);

getch();

}

Calculate Electricity Bill with if-else condition

Calculate Electricity Bill with if-else condition
<=100 Rs.4/units
> 100 and <=300 Rs.4.50/units
>300 and <=500 Rs.4.75/units
>500 Rs.5/units

#include<stdio.h>

#include<conio.h>

void main ()

{

int unit, total;

clrscr ();

printf("Enter Total Units:");

scanf ("%d", &unit);

if (unit<=100)

{

total=unit*4;

}

else if (unit>100 && unit<=300)

{

total=unit*4.5;

}

else if (unit >300 && unit<=500)

{

total=unit*4.75;

}

else

{

total=unit*5;

}

printf("Total: %d", total);

getch ();

}

Method 2:(Coded by: Manpreet Singh Dhindsa, Patiala)

#include<stdio.h>

#include<conio.h>

void main()

{

int units;

float total_bill;

clrscr();

printf("Enter the no. of units");

scanf("%d",&units);

if(units <= 100)

total_bill = units * 4;

else if(units <= 300)

total_bill = units * 4.5;

else if(units <= 500)

total_bill = units * 4.75;

else

total_bill = units * 5;

printf("the bill to be paid is = %f", total_bill);

getch();

}

Question by: Simi Sandhu @ C Programming Facebook Page