/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/* 
 * File:   main.cpp
 * Author: Tsoukalas Vassilis
 *
 * Created on 14 Δεκεμβρίου 2018, 12:16 μμ
 */

#include <iostream>

using namespace std;


double ginomeno(double g[], int size) {
   double gin=1.0;
   
   for (int i=0; i<size; i++)
       gin=gin* g[i];
   
   return gin;
}


bool allNegative(int g[], int size) {
    bool flag=true;
    
    for (int i=0; i< size; i++) {
        if (g[i] >=0 ) flag=false;
    }
    
    return flag;
}

int sumPositive(int g[], int size) {
    int sum=0;
    for (int i=0; i<size; i++) {
        if (g[i] > 0) {
            sum+= g[i];
        }
    }
    return sum;
}

int countZero(int g[], int size) {
    int cnt=0;
    for (int i=0; i<size; i++) {
        if (g[i] == 0) {
            cnt++;
        }
    }
    return cnt; 
}


int whichCharCount(char g[], char ch, int size) {
     int cnt=0;
    for (int i=0; i<size; i++) {
        if (g[i] == ch) {
            cnt++;
        }
    }
    return cnt; 
   
}


void reverse(char source[], char target[], int size) {
    int j=size -1;
    for (int i=0; i<size; i++) {
        target[i]=source[j];
        j--;
    }
}



void swap(double source[], double target[], int size) {
    for (int i=0; i< size; i+=2) {
        target[i]= source[i+1];
        target[i+1]= source[i];
    }
}

void print(char g[], int size) {
    for (int i=0; i<size; i++) {
        cout << g[i] << " ";
    }
}

void printD(double g[], int size) {
    for (int i=0; i<size; i++) {
        cout << g[i] << " ";
    }
}


/*
 * 
 */
int main(int argc, char** argv) {

    double tbl[3]={ 1.1, 2.2, 3.3};
    
    double myGin= ginomeno(tbl,3);
    cout << "Ginomeno: " << myGin << endl;
    
    int tbl2[5]={-1,-3,-5,-4,12};
    if (allNegative(tbl2,5)) {
        cout << "All are negative." << endl;
    }
    else {
        cout << "Not all negative." << endl;
    }
    tbl2[4]= -12;
    if (allNegative(tbl2,5)) {
        cout << "All are negative." << endl;
    }
    else {
        cout << "Not all negative." << endl;
    }    
    
    double mySum= sumPositive(tbl2,5);
    cout << "Sum is: " << mySum << endl;
    tbl2[4]= 12;
    cout << "Sum is: " << sumPositive(tbl2,5) << endl;
    
    
    cout << "Count zeros: " << countZero(tbl2,5) << endl;
    tbl2[2]= 0;
    tbl2[4]= 0;
    cout << "Count zeros: " << countZero(tbl2,5) << endl;
    
    
    char tbl3[]={'M','A','N','O','W','A','R'};
    cout << "Count Letter : " << whichCharCount(tbl3,'A',7) << endl;
    
    char reversedTbl[7];
    reverse(tbl3,reversedTbl, 7);
    print(reversedTbl,7);
    cout << endl;
    
    double tbl4[4]={ 1.1, 2.2, 3.3,4.4};
    double swapTbl[4];
    swap(tbl4,swapTbl, 4);
    printD(tbl4,4);
    cout << endl;
    printD(swapTbl,4);
    cout << endl;
    
    return 0;
}