C program to enter basic salary and calculate gross salary of an employee

Write a C program to input basic salary of an employee and calculate gross salary according to given conditions.
Basic Salary <= 10000 : HRA = 20%, DA = 80%
Basic Salary is between 10001 to 20000 : HRA = 25%, DA = 90%
Basic Salary >= 20001 : HRA = 30%, DA = 95%

Example
Input

Input basic salary of an employee: 22000

Output

Gross salary = 44000

Logic to find gross salary of an employee

Step by step descriptive logic to find gross salary of an employee.

1. Input basic salary of employee. Store it in some variable say basic_salary.
2. If basic_salary <= 10000 then, hra = basic_salary * 0.8 and da = basic_salary * 0.2.
3. Similarly check basic salary and compute hra and da accordingly.
4. Calculate final gross salary using formula gross_salary = basic_salary + da + hra.

/**
 * C program to calculate gross salary of an employee
 */

#include <stdio.h>

int main()
{
    float basic, gross, da, hra;

    /* Input basic salary of employee */
    printf("Enter basic salary of an employee: ");
    scanf("%f", &basic);


    /* Calculate D.A and H.R.A according to specified conditions */
    if(basic <= 10000)
    {
        da  = basic * 0.8;
        hra = basic * 0.2;
    }
    else if(basic <= 20000)
    {
        da  = basic * 0.9;
        hra = basic * 0.25;
    }
    else
    {
        da  = basic * 0.95;
        hra = basic * 0.3;
    }

    /* Calculate gross salary */
    gross = basic + hra + da;

    printf("GROSS SALARY OF EMPLOYEE = %.2f", gross);

    return 0;
}

/*
Output :

Enter basic salary of an employee: 22000
GROSS SALARY OF EMPLOYEE = 49500.00
*/