calculatortxt

//calculator

#include <iostream>
#include <math.h>

using namespace std;

float addition (float a);
float subtraction (float a, float b);
float multiplication (float a);
float division (float a, float b);
float power (float a, float b);
float radix (float a, float b);
float sincostan (float a);
float log (float a);
float pythagorasc (float a, float b);
float pythagorasb (float a, float c);
float arcsincostan (float a);
float quadrateq (float a, float b,float c, float x);
float percentage (float a, float b);
float systems2 (float a, float b, float c, float d, float e, float f, float x, float y);

int main(int x, float a, float b, float c, float d, float e, float f, float y, int p)
{
    loop:
    cout << endl;
    cout << "D-CALC (powered by D-CODES) V 1.1" << endl;
    cout << endl;
    cout << "1 for addition" << endl;
    cout << "2 for subtraction" << endl;
    cout << "3 for multiplication" << endl;
    cout << "4 for division" << endl;
    cout << "5 for power" << endl;
    cout << "6 for root" << endl;
    cout << "7 for sin/cos/tan" << endl;
    cout << "8 for logarythmus" << endl;
    cout << "9 for pythagoras: hypotenuse unknown" << endl;
    cout << "10 for pythagoras: leg unknown" << endl;
    cout << "11 for arcsin/-cos/-tan" << endl;
    cout << "12 for quadratic equation" << endl;
    cout << "13 for percentage" << endl;
    cout << "14 for quadratic systems" << endl;
    cout << endl;
    cout << "Select an operation: ";
    cin >> x;
    cout << endl;
    if (x==1)
    addition (a);
    else if (x==2)
    subtraction (a, b);
    else if (x==3)
    multiplication (a);
    else if (x==4)
    division (a, b);
    else if (x==5)
    power (a, b);
    else if (x==6)
    radix (a, b);
    else if (x==7)
    sincostan (a);
    else if (x==8)
    log (a);
    else if (x==9)
    pythagorasc (a, b);
    else if (x==10)
    pythagorasb (a, c);
    else if (x==11)
    arcsincostan (a);
    else if (x==12)
    quadrateq (a, b, c, x);
    else if (x==13)
    percentage (a, b);
    else if (x==14)
    systems2 (a, b, c, d, e, f, x, y);
    cout << endl;
    cout << "Thank's for using D-CODES software";
    cout << endl;
    cout << endl;
    cout << "Enter 1 to repeat / 0 to finish: ";
    cin >> p;
    if (p==1)
    {
        goto loop;
    }


    return 0;
}

float addition (float a)
{
    for (;a>0;)
    {
        float b;

        cout << "Enter addend (0 for sum): ";
        cin >> a;
        b+=a;

        if (a==0)
          {
              cout << endl;
              cout << "The sum of the entered numbers is: " << b << endl;
          }
    }
}

float subtraction (float a, float b)
{
        float c;

        cout << "Enter subtrahend: ";
        cin >> a;
        cout << "Enter minuend (press 0 for difference): ";
        cin >> b;
        c=a-b;

    for (;a>0;)
    {

        cout << "Enter minuend (press 0 for difference): ";
        cin >> b;
        c-=b;

        if (b==0)
          {
              cout << endl;
              cout << "The difference of the entered numbers is: " << c << endl;
              break;
          }
     }

}

float multiplication (float a)
{
        float b;

        cout << "Enter factor (press 1 for product): ";
        cin >> a;
        cout << "Enter factor (press 1 for product): ";
        cin >> b;
        b=a*b;

    for (;a>0;)
    {
        cout << "Enter factor (press 1 for product): ";
        cin >> a;
        b*=a;

        if (a==1)
          {
              cout << endl;
              cout << "The product of the entered numbers is: " << b << endl;
              break;
          }
    }
}

float division (float a, float b)
{
        float c;

        cout << "Enter dividend: ";
        cin >> a;
        cout << "Enter divisor (press 1 for difference): ";
        cin >> b;
        c=a/b;

    for (;a>0;)
    {

        cout << "Enter divisor (press 1 for difference): ";
        cin >> b;
        c/=b;

        if (b==1)
          {
              cout << endl;
              cout << "The quotient of the entered numbers is: " << c << endl;
              break;
          }
     }

}

float power (float a, float b)
{
    cout << "Enter base: ";
    cin >> a;
    cout << "Enter exponent: ";
    cin >> b;
    cout << a << "^" << b << " = " << pow(a,b) << endl;
}

float radix (float a, float b)
{
    cout << "Enter radicand: ";
    cin >> a;
    cout << "Enter order: ";
    cin >> b;
    cout << b << "^sqrt(" << a << ") = " << pow(a,(1/b)) << endl;
}

float sincostan (float a)
{
    cout << "Enter a number: ";
    cin >> a;
    cout << "sin(" << a << ") = "<< sin(a) << endl;
    cout << "cos(" << a << ") = "<< cos(a) << endl;
    cout << "tan(" << a << ") = "<< tan(a) << endl;
}

float log (float a)
{
    cout << "Enter a number: ";
    cin >> a;
    cout << "log10(" << a << ") = " << log10(a) << endl;
}

float pythagorasc (float a, float b)
{
    cout << "Enter first leg: ";
    cin >> a;
    cout << "Enter second leg: ";
    cin >> b;
    cout << "sqrt( " << a << "^2 + " << b << "^2 ) = " << sqrt((pow(a,2))+(pow(b,2))) << endl;
}

float pythagorasb (float a, float c)
{
    cout << "Enter leg: ";
    cin >> a;
    cout << "Enter hypotenuse: ";
    cin >> c;
    cout << "sqrt( " << a << "^2 - " << c << "^2 ) = " << sqrt((pow(a,2))-(pow(c,2))) << endl;
}

float arcsincostan (float a)
{
    cout << "Enter a number: ";
    cin >> a;
    cout << "arcsin(" << a << ") = "<< asin(a) << endl;
    cout << "arccos(" << a << ") = "<< acos(a) << endl;
    cout << "arctan(" << a << ") = "<< atan(a) << endl;
}

float quadrateq (float a, float b,float c, float x)
{
    cout << "Enter coefficient (a) of x^2: ";
    cin >> a;
    cout << "Enter coefficient (b) of x: ";
    cin >> b;
    cout << "Enter constant (c): ";
    cin >> c;
    cout << "x1 = (" << b << " + sqrt(" << b << "^2 - 4*" << a << "*" << c <<"))/( 2*" << a << ") = " << (b+sqrt(pow(b,2)-4*a*c))/(2*a) << endl;
    cout << "x2 = (" << b << " - sqrt(" << b << "^2 - 4*" << a << "*" << c <<"))/( 2*" << a << ") = " << (b-sqrt(pow(b,2)-4*a*c))/(2*a) << endl;
}

float percentage (float a, float b)
{
    cout << "Enter a number: ";
    cin >> a;
    cout << "Enter the percentage: ";
    cin >> b;
    cout << b << "% of " << a << " is: " << a*(b/100) << endl;
}

float systems2 (float a, float b, float c, float d, float e, float f, float x, float y)
{
    cout << "Enter coefficient (a) of x: ";
    cin >> a;
    cout << "Enter coefficient (b) of y: ";
    cin >> b;
    cout << "Enter constant (c): ";
    cin >> c;
    cout << a << "*x + " << b << "*y = " << c << endl;
    cout << "Enter coefficient (d) of x: ";
    cin >> d;
    cout << "Enter coefficient (e) of y: ";
    cin >> e;
    cout << "Enter constant (f): ";
    cin >> f;
    cout << d << "*x + " << e << "*y = " << f << endl;
    cout << "x is: " << ((b*f)-(e*c))/((b*d)-(a*e)) << endl;
    cout << "y is: " << (c-(a*x))/b << endl;
}