trap_keys_adv.cpp

#include <iostream>
#include <sstream>
#include <string>
#include <stdio.h>

using namespace std;

char const hex[16] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};

void DisplayTitle(){cout<<"-------------------------------------\n          Key press example\n              Tutorial\n-------------------------------------\n\n";}

string v() {
    return " pressed!\n";
}
string s() {
    return "\nSpace pressed!\n"; /* Trap Space key. */
}
string a() {
    return "\nSomething pressed...\n"; /* Trap any key besides the ones from if statement or switch. */ 
}
string r() {
    return "\nCarriage return performed!\n";
}
string e() {
    return "\nEnter pressed!\n"; /* Trap Enter key. 0x10, \x10 */ 
}

/*
const char * v() {
    return " pressed!\n";
}
*/

int main(){
    DisplayTitle();
    // Testing char: printf("%c",13);
    cout << "Type a value... \r\n";
    
    char c;
    c=cin.get();
    
    // else if(c=='\n') { cout << "Enter pressed!";  }
    if(c==10) { cout<<e(); }
    else if(c==13) { cout<<r(); }
    else if(c==0x20) { cout<<s(); }
    
    /* Mapped keys */
    else if(c==0x41) { cout<<"\n"<<&c<<v(); /* Trap A key. */ }
    else if(c==0x61) { cout<<"\n"<<&c<<v(); /* Trap a key. */ }
    
    else if(c==0x42) { cout<<"\n"<<&c<<v(); /* Trap B key. */ }
    else if(c==0x62) { cout<<"\n"<<&c<<v(); /* Trap b key. */ }
    
    else if(c==0x43) { cout<<"\n"<<&c<<v(); /* Trap C key. */ }
    else if(c==0x63) { cout<<"\n"<<&c<<v(); /* Trap c key. */ }
    
    else if(c==0x44) { cout<<"\n"<<&c<<v(); /* Trap D key. */ }
    else if(c==0x64) { cout<<"\n"<<&c<<v(); /* Trap d key. */ }
    
    /* Output information on key and perform conversions */
    else { cout<<a(); }
    if(c!=10 || c==13) { cout << "Converted character to HEX: " << std::hex << int(c) << ".\r\nConverted character to DEC: " << std::dec << int(c) << ".\r\nConverted character to OCT: " << std::oct << int(c) << ".\r\n"; /* Convert character to encodings. */ }
    
    stringstream ss;
    string s;
    const char * b = &c;
    const char * d = b;
    ss << b;
    ss >> s;
    cout << "Pointer: " << ss << " | Output: " << ss.str() << " | String/Char Length: " << std::char_traits<char>::length(d) << "\r\n";
    
    return 0;
}