#include<stdio.h>

int main()
{
    float a, c, b = 0;

    printf("Enter salary: ");
    scanf("%f", &a);

    if(a>=1 && a<=400)
    {
        b = 12;
    }
    else if(a>=401 && a<=900)
    {
        b = 10;
    }
    else if(a>=901 && a<=1200)
    {
        b = 5;
    }
    else if(a >=1201)
    {
        b = 3;
    }


    if(b == 12 || b == 10 || b == 5 || b == 3)
    {
        c = (a * (b/100));
        a = a + c;
        printf("Your incremented salary is: %.2f\n",a);
    }
    else
    {
        printf("You entered a negative value\n");
    }


    return 0;
}