25-11-16 program backup

#include <iostream>
#include <cstdio>

using namespace std;

void simple_math_int();
void simple_math_double();
void many_expressions();
void point_coords();
void point_coords_old();
void english_name();
void plural_word();
void min_max();
void duplicates();

int main()
{
    int mode;
    cout << "Select program:\n1 - simple math int\n2 - simple math double\n3 - many expressions\n4 - point coords\n5 - english name\n6 - plural word\n7 - min/max\n8 - has duplicates" << endl;
    cin >> mode;
    switch(mode){
    case 1:
        simple_math_int();
        break;
    case 2:
        simple_math_double();
        break;
    case 3:
        many_expressions();
        break;
    case 4:
        point_coords();
        break;
    case 5:
        english_name();
        break;
    case 6:
        plural_word();
        break;
    case 7:
        min_max();
        break;
    case 8:
        duplicates();
        break;
    default:
        cout << "Enter valid value idiot!";
        break;
    }
    return 0;
}

void simple_math_int(){
    int num1, num2;
    int addition, substraction, multiplication, division, modulo;
    cout << "Enter two numbers: ";
    cin >> num1 >> num2;
    addition = num1+num2;
    substraction = num1-num2;
    multiplication = num1*num2;
    cout << "Addition: " << addition << endl;
    cout << "Substraction: " << substraction << endl;
    cout << "Multiplication: " << multiplication << endl;
    if(num2 != 0){
        division = num1/num2;
        modulo = num1%num2;
        cout << "Division: " << division << endl;
        cout << "Modulo: " << modulo << endl;
    } else {
        cout << "Only idiots try to divide by zero!" << endl;
    }
}

void simple_math_double(){
    double num1, num2;
    double addition, substraction, multiplication, division, modulo;
    cout << "Enter two numbers: ";
    cin >> num1 >> num2;
    addition = num1+num2;
    substraction = num1-num2;
    multiplication = num1*num2;
    cout << "Addition: " << addition << endl;
    cout << "Substraction: " << substraction << endl;
    cout << "Multiplication: " << multiplication << endl;
    if(num2 != 0.0){
        division = num1/num2;
        cout << "Division: " << division << endl;
    } else {
        cout << "Only idiots try to divide by zero!" << endl;
    }
}

void many_expressions(){
    int i1 = 2, i2 = 5, i3 = -3;
    double d1 = 2.0, d2 = 5.0, d3 = -0.5;
    cout << "i1 + i2 = " << i1 + i2 << endl;
    cout << "i1 / i2 = " << i1 / i2 << endl;
    cout << "i2 / i1 = " << i2 / i1 << endl;
    cout << "i1 * i3 = " << i1 * i3 << endl;
    cout << "d1 / d2 = " << d1 / d2 << endl;
    cout << "d2 / d1 = " << d2 / d1 << endl;
    cout << "d3 * d1 = " << d3 * d1 << endl;
    cout << "d1 + i2 = " << d1 + i2 << endl;
    cout << "i1 / d2 = " << i1 / d2 << endl;
    cout << "d2 / i1 = " << d2 / i1 << endl;
    cout << "i2 / d1 = " << i2 / d1 << endl;
    cout << "i1 / i2 * d1 = " << i1 / i2 * d1 << endl;
    cout << "d1 * i1 / i2 = " << d1 * i1 / i2 << endl;
    cout << "d1 / d2 * i1 = " << d1/d2 * i1 << endl;
    cout << "i1 * d1 / d2 = " << i1 * d1/d2 << endl;
    cout << "i2 / i1 * d1 = " << i2/i1 * d1 << endl;
    cout << "d1 * i2 / i1 = " << d1 * i2 / i1 << endl;
    cout << "d2 / d1 * i1 = " << d2 / d1 * i1 << endl;
    cout << "i1 * d2 / d1 = " << i1 * d2/d1 << endl;
}

void point_coords_old(){
    int x1, y1, x2, y2;
    int mid_x,mid_y;
    cout << "Enter first point: ";
    cin >> x1 >> y1;
    cout << "Enter second point: ";
    cin >> x2 >> y2;
    mid_x = (x1+x2)/2;
    mid_y = (y1+y2)/2;
    printf("New coords: (%d,%d)\n",mid_x,mid_y);
}

void point_coords(){
    char nawias, przecinek;
    int x1, y1, x2, y2;
    int mid_x,mid_y;
    cout << "Enter first point: ";
    cin >> nawias >> x1 >> przecinek >> y1 >> nawias;
    cout << "Enter second point: ";
    cin >> nawias >> x2 >> przecinek >> y2 >> nawias;
    mid_x = (x1+x2)/2;
    mid_y = (y1+y2)/2;
    printf("New coords: (%d,%d)\n",mid_x,mid_y);
}

void english_name(){
    int number;
    cout << "Enter number (1-5): ";
    cin >> number;
    if(number>5||number<0){
        cout << "Enter valid number idiot!" << endl;
    }
    switch(number){
        case 0: cout << "Zero\n"; break;
        case 1: cout << "One\n"; break;
        case 2: cout << "Two\n"; break;
        case 3: cout << "Three\n"; break;
        case 4: cout << "Four\n"; break;
        case 5: cout << "Five\n"; break;
        default: cout << "Unsupported number\n"; break;
    }
}

void plural_word(){
    int number, number2;
    cout << "Enter number: ";
    cin >> number;
    number2 = number%10;
    if(number == 1){
        cout << number << " tomato - " << number << " pomidor\n";
    } else if(number2 >= 2 && number2 <= 4){
        cout << number << " tomatoes - " << number << " pomidory\n";
    } else {
        cout << number << " tomatoes - " << number << " pomidorow\n";
    }
}

void min_max(){
    int curnr, minnr, maxnr;
    cout << "Enter five numbers:\n";
    for(int i=0;i<5;i++){
        cin >> curnr;
        if(curnr > maxnr){
            maxnr = curnr;
        }
        if(curnr < minnr){
            minnr = curnr;
        }
    }
    cout << "Min: " << minnr << "\nMax: " << maxnr << "\n";
}

bool in_array(int* ary, int element, int elements){
    for(int i=0;i<elements;i++){
        if(ary[i] == element){
            return true;
        }
    }
    return false;
}

void duplicates(){
    int numbers[5];
    int number;
    bool has_duplicates = false;
    cout << "Enter five numbers:\n";
    for(int i=0;i<5;i++){
        cin >> number;
        if(in_array(numbers, number, 5)){
            has_duplicates = true;
        }
        numbers[i] = number;
    }
    if(has_duplicates){
        cout << "Has duplicates!\n";
    } else {
        cout << "No duplicates!\n";
    }
}