Calcuate Tax | if exercise

Exercise 12. C program to calculate tax, based on the following slabs: 1

#include<stdio.h>
void main()
{
    float salary, tax;
    printf("Enter Salary:");
    scanf("%f",&salary);
    if(salary <= 50000)
    {
        tax = 0;
    }
    else
    if(salary>50000 && salary<=90000)
    {
        tax = salary * 20/100;
    }
    else
    if(salary>90000 && salary<=150000)
    {
        tax = salary * 30/100;
    }
    else
    {
        tax = salary * 35/100;
    }
    printf("Tax = %.2f", tax);
}