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This example translates text into Morse Code.
The program asks you to enter a message. It then examines each character in whatever you type, using a switch statement to decide whether or not to replace any letters with their equivalent Morse Code patterns.
Select and copy the C++ source-code at the bottom of this post.
Paste into a text editor, such as Nano or Geany.
Then save the new file, ending in .cpp
I used morse.cpp
To compile from the command-line:
g++ -o morse morse.cpp
To run from the command-line:
./morse
Here's the code:
#include <iostream> // Program will be using keyboard and screen
using namespace std; // Will be using standard identifiers string, cin, cout, endl
int main()
{
// User types in some text from the keyboard
cout << "Please type in some text:" << endl;
string myText;
getline( cin, myText );
// Find out how long the text is
int lengthOfMyText = myText.length();
// Examine each character in the text
char letterAtThisPos;
for ( int position = 0; position < lengthOfMyText; position++ )
{
// Extract single character from the string
letterAtThisPos = myText.at( position );
cout << letterAtThisPos << " is ";
// Convert character to lower-case - it may have been a capital
letterAtThisPos = tolower ( letterAtThisPos );
// If it is a letter of the alphabet, change to Morse code
switch ( letterAtThisPos )
{
case 'a': cout << ".-"; break;
case 'b': cout << "-..."; break;
case 'c': cout << "-.-."; break;
case 'd': cout << "-.."; break;
case 'e': cout << "."; break;
case 'f': cout << "..-."; break;
case 'g': cout << "--."; break;
case 'h': cout << "...."; break;
case 'i': cout << ".."; break;
case 'j': cout << ".---"; break;
case 'k': cout << "-.-"; break;
case 'l': cout << ".-.."; break;
case 'm': cout << "--"; break;
case 'n': cout << "-."; break;
case 'o': cout << "---"; break;
case 'p': cout << "-.-."; break;
case 'q': cout << "--.-"; break;
case 'r': cout << ".-."; break;
case 's': cout << "..."; break;
case 't': cout << "-"; break;
case 'u': cout << "..-"; break;
case 'v': cout << "...-"; break;
case 'w': cout << ".--"; break;
case 'x': cout << "-..-"; break;
case 'y': cout << "-.--"; break;
case 'z': cout << "--.."; break;
case ' ': cout << "(gap)"; break;
// This will be chosen if none of the cases above have been selected...
default: cout << "?"; break;
} // end of switch statement
// Move on to next line after displaying morse for the letter
cout << endl;
} // end of the for loop
// Display final blank line
cout << endl;
return 0;
}
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