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C++ program that converts word or name to ICAO. Wont print my ICAO results.

k80jugu (2)
This is my code that I am struggling to get the results (ICAO words) printed. My code has to use functions, have a user menu, and cant use arrays. Whenever I do not have a user menu or functions then the code runs perfectly. As soon as I add everything else, it does not seem to print the results. Any advice?



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#include <iostream>
#include <iomanip>
#include <string>
using namespace std;

void userInput();
void wordToICAO();
void userMenu();
int main(int argc, char** argv)
  {
   userMenu();
   userInput();
   wordToICAO();
   
   cout << endl << endl;

    return 0;
 } // End of main function() 

void userMenu()

{
    int choice;
    do
    {
    cout << "  ___________________________________"  << endl;
    cout << " |This program takes user input of a |" << endl;
    cout << " |word or name and displays the word |" << endl;
    cout << " |or name in the International Civil |" << endl;
    cout << " |Aviation Organization Alphabet     |" << endl;
    cout << " |-----------------------------------|" << endl;
    cout << " |                  MENU             |" << endl;
    cout << " |      0: Quit Program              |" << endl;
    cout << " |      1: Print to ICAO             |" << endl;
    cout << " |-----------------------------------|" << endl;
    cout << " |      Enter your choice:           |" << endl;
    cin >> choice;
    
    switch(choice)
    {
    case 0: cout << "Exiting Program" << endl;
         break;
    case 1: userInput();
            wordToICAO();
         break;
    default: cout << "Invalid choice, try again!" << endl;
    }
    
    }
    while( choice != 0 );

} // End of userMenu()


void userInput()
{
    string Word_Input;            // Disclose the varibles you will use
    char Letters;
  { 

    cout<< " Enter a word or name: ";    // Ask the user to enter a word or name
    cin>> Word_Input;

       for(int i = 0; i < Word_Input.length(); i++)
    {
        // characters must be processed one at a time
        Letters = Word_Input.at (i);
    }
  } 
} // End of userInput()


void wordToICAO()
 {   
    string Word_Input;            
    string Wrd_Otpt = " ";   
    char Letters;
 
{
        // Program will retrieve the appropriate ICAO word to match the character

        switch(Letters)
        {
      case 'A': case 'a':
        Wrd_Otpt += " Alpha ";
        break;
      case 'B': case 'b':
        Wrd_Otpt += " Bravo";
        break;
      case 'C': case 'c':
        Wrd_Otpt += " Charlie";
        break;
      case 'D': case 'd':
        Wrd_Otpt += " Delta ";
        break;
      case 'E': case 'e':
        Wrd_Otpt += " Echo ";
        break;
      case 'F': case 'f':
        Wrd_Otpt += "Foxtrot";
        break;
      case 'G': case 'g':
        Wrd_Otpt += " Golf";
          break;
      case 'H': case 'h':
        Wrd_Otpt += " Hotel";
        break;
      case'I': case 'i':
        Wrd_Otpt += " India ";
        break;
      case 'J': case 'j':
        Wrd_Otpt += " Juliet";
        break;
      case 'K': case 'k':
        Wrd_Otpt += " Kilo";
        break;
      case 'L': case 'l':
        Wrd_Otpt += " Lima ";
        break;
      case 'M': case 'm':
        Wrd_Otpt += " Mike ";
        break;
      case 'N': case 'n':
        Wrd_Otpt += " November ";
          break;
      case 'O': case 'o':
        Wrd_Otpt += " Oscar ";
        break;
      case'P': case 'p':
        Wrd_Otpt += " Papa ";
        break;
      case 'Q': case 'q':
        Wrd_Otpt += " Quebec";
        break;
      case 'R': case 'r':
        Wrd_Otpt += " Romeo ";
        break;
      case 'S': case 's':
        Wrd_Otpt += "Sierra";
        break;
      case 'T': case 't':
        Wrd_Otpt += " Tango";
        break;
      case 'U': case 'u':
        Wrd_Otpt += " Uniform";
          break;
     case 'V': case 'v':
        Wrd_Otpt += "Victor";
         break;
      case 'W': case 'w':
        Wrd_Otpt += " Whiskey ";
        break;
      case'X': case 'x':
        Wrd_Otpt += " X-ray ";
        break;
      case 'Y': case 'y':
        Wrd_Otpt += " Yankee ";
        break;
      case 'Z': case 'z':
        Wrd_Otpt += " Zulu";
        break;
    }
    }

    //Display the ICAO words
    cout<< " Phonetic version is:" << Wrd_Otpt<<endl;
    cout << endl << endl;

     
 } // End of wordToICAO()
Last edited on
AbstractionAnon (6954)
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void wordToICAO()
{
string Word_Input;
string Wrd_Otpt = " ";
char Letters;
{
// Program will retrieve the appropriate ICAO word to match the character

switch(Letters)

Letters is an uninitialized variable.

PLEASE ALWAYS USE CODE TAGS (the <> formatting button) when posting code.
It makes it easier to read your code and also easier to respond to your post.
http://www.cplusplus.com/articles/jEywvCM9/
Hint: You can edit your post, highlight your code and press the <> formatting button.
keskiverto (10365)
Functions can take arguments and return a value. See http://www.cplusplus.com/doc/tutorial/functions/

Your function:
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void userInput()
{
  string Word_Input;
  char Letters; // local variable; will store one character
  {
    cout<< " Enter a word or name: ";
    cin>> Word_Input;

    for(int i = 0; i < Word_Input.length(); i++)
    {
      Letters = Word_Input.at (i);  // each assignment overwrites the Letters
    }
    // Letters now has last character of Word_Input
  }
} // Letters is destroyed here

We get no data by calling userInput() because it does not pass anything to us.

Note how you call function string::at(): Letters = Word_Input.at (i);
You pass data, argument 'i' to the function.
You receive data; store the return value of at() into variable 'Letters'.
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