ICSL_A4

/*****************************************
* Assignment 4
* Name: �i��
* Student Number: 104303040
* Course: 2017-CE1001
******************************************/
#include<iostream>
#include<string>
#include<algorithm>
#include<map>
using namespace std;

bool isup( char c ){ //upper
    return c > '@' && c < '[';
}

bool islo( char c ){ //lower
    return c > '`' && c < '{';
}

int main(){
    string s , sub = "" ;
    bool p = 0; //continuous
    map<char,int> mp; //count

    cout << "Please enter something without space:" << endl;

    cin >> s;

    cout << ' ' << endl << "case1:" << endl;

    for( int i = 0 ; i < s.size() ; i++ ) {
        ++mp[ isup( s[i] ) ? s[i] + 32 : s[i] ]; //counting
        if( !isup( s[i] ) && !islo( s[i] ) ) {
            putchar( s[i] == '_' ? ' ' : s[i] ); //replace with space
            continue;
        }
        putchar( isup( s[i] ) ? s[i] + 32 : s[i] - 32 ); //switch
    }
    cout << endl << ' ' << endl << "case2" << endl;

    for( int i = s.size() - 1 ; i > -1 ; i-- ){
        if( !isup( s[i] ) && !islo( s[i] ) && s[i] != '\'' ){
            if( p ){
                p = 0;
                reverse( sub.begin() , sub.end() ); // reverse
                cout << sub;
                sub = "";
            }
            putchar( s[i] == '_' ? ' ' : s[i] ); //replace
            continue;
        }
        p = 1;
        sub += s[i];
    }
    if( p ) {
        reverse( sub.begin() , sub.end() ); //legacy
        cout << sub;
    }

    cout << endl << ' ' << endl << "case3" << endl;

    cout << "a:" << mp['a'] << ",e:" << mp['e'] << ",i:" << mp['i'] << ",o:" << mp['o'] << ",u:" << mp['u'] << endl;

    return 0;
}