calculate income tax in C

 #include <stdio.h>

int main()

{

    float income, tax = 0;

    printf("Enter your income\n");

    scanf("%f", &income);

    if (income >= 250000 && income <= 500000)

    {

        tax = tax + 0.05 * (income - 250000);

    }

    if (income >= 500000 && income <= 1000000)

    {

        tax = tax + 0.2 * (income - 500000);

    }

    if (income >= 1000000 )

    {

        tax = tax + 0.3 * (income - 500000);

    }

    printf("Total tax you have to pay is:%f", tax);

    return 0;

}