Matura2015Zadanie4

#include <iostream>
#include <fstream>
#include <string>

#define FILE_NAME "liczby.txt"

using namespace std;

bool ismorezerosthansones(string a){
    int z = 0;
    int o = 0;
    for(int i = 0; a[i]!='\0'; i++){
        if(a[i] == '0') z++;
        if(a[i] == '1') o++;
    }
    return z > o ? true : false;
}

bool isdivideby2(string a){
    return a[a.size()-1] == '0' ? true : false;
}

bool isdivideby8(string a){
    if(a.size()<3) return false;
    int e = a.size()-1;
    if(a[e] == '0' && a[e-1] == '0' && a[e-2] == '0') return true;
    else return false;
}

bool isbigger(string a, string b){ //is a > b
    if(a.size()>b.size()) return true;
    if(a.size()<b.size()) return false;
    for(int p = a.size()-1; p>=0; p--){
        if(a[p] != b[p]){
            if(a[p] == '1') return true;
            else return false;
        }
    }
}

//by grzeca
int main(int argc, char* argv[])
{
    int morezerosthansones = 0;
    int divideby2 = 0;
    int divideby8 = 0;
    string minimum = "";
    string maximum = "";
    int minline = 0;
    int maxline = 0;
    int linecounter = 1;

    fstream file;
    file.open(FILE_NAME, fstream::in);

    if(file.good()){
        while(!file.eof()){
            char buf[255]; file.getline(buf, 255); string num = buf;
            if(ismorezerosthansones(num)) morezerosthansones++;
            if(isdivideby2(num)) divideby2++;
            if(isdivideby8(num)) divideby8++;
            if(isbigger(num,maximum)){ maximum = num; maxline = linecounter; }
            if(isbigger(minimum,num)){ minimum = num; minline = linecounter; }
            linecounter++;
        }
    }

    file.close();

    cout<<"== Wynik ======================================="<<endl;
    cout<<" Ilosc liczb..."<<endl;
    cout<<"    ktore maja wiecej zer niz jedynek : "<<morezerosthansones<<endl;
    cout<<"    podzielnych przed 2               : "<<divideby2<<endl;
    cout<<"    podzielnych przed 8               : "<<divideby8<<endl;
    cout<<" Najmniejsza liczba to                : "<<minimum<<endl;
    cout<<" Wystapila ona na linii               : "<<minline<<endl;
    cout<<" Najwieksza liczba to                 : "<<maximum<<endl;
    cout<<" Wystapila ona na linii               : "<<maxline<<endl;
    return 0;
}