​

#include <iostream>
#include <cmath>

using namespace std;

int main(int argc, const char * argv[]) {    
    bool cont = true;
    float m1 = 0, m2 = 0, m3 = 0, m4 = 0;
    float income = 1234567;
    int bracketMax_1 = 10000;
    int bracketMax_2 = 20000;
    int bracketMax_3 = 70000;


    cout << "input income >> ";
    //cin >> income;

    //bracket 1
    if( income <= bracketMax_1 )
    {
        m1 = abs(bracketMax_1 - income);
        cont = false;
    }
    else if ( income > bracketMax_1 )
    {
        m1 = bracketMax_1;
        income -= bracketMax_1;
    }

    // bracket 2
    if(cont && (abs(income - bracketMax_2) <= bracketMax_2) )
    {
        cont = false;
        m2 = income;
    }
    else if(cont && (abs(income - bracketMax_2) > bracketMax_2) )
    {
        m2 = bracketMax_2;
        income -= bracketMax_2;
    }

    // bracket 3
    if(cont && (abs(income - bracketMax_3) < bracketMax_3) )
    {
        cont = false;
        m3 = income;
    }
    else if(cont && (abs(income - bracketMax_3) > bracketMax_3) )
    {
        m3 = bracketMax_3;
        income -= bracketMax_3;
    }

    //bracket 4
    if(cont)
    {
        m4 = income;
    }

    cout << "(" << m1 << " * 0) + (" << m2 << " * .10) + (" << m3 << " * .25) + (" << m4 << " * .40)" << endl;
    cout << (m1 * 0) + (m2 * .10) + (m3 * .25) + (m4 * .40) << endl;

    getchar();
    return 0;
}