C++ || Convert Numbers To Words Using A Switch Statement

July 21, 2012 admin No comments

This program demonstrates more practice using arrays and switch statements.

REQUIRED KNOWLEDGE FOR THIS PROGRAM

Integer Arrays Cin.get Isdigit For loops While Loops Switch Statements - How To Use

Using “cin.get(),” this program first asks the user to enter in a number (one at a time) that they wish to translate into words. If the text which was entered into the system is a number, the program will save the user input into an integer array. If the text is not a number, the input is discarded. After integer data is obtained, a for loop is used to traverse the integer array, passing the data to a switch statement, which translates the number to text.

This program is very simple, so it does not have the ability to display any number prefixes. As a result, if the number “1858” was entered into the system, the program would output the converted text: “One Eight Five Eight.”





		
		
			Convert Numbers To Words
			
C++
			
			#include <iostream>
#include <cctype>
using namespace std;
 
int main()
{
	// declare variables
	int numberArry[50];
	int numElems=0;
	char singleNum=' ';

	// ask the user for a number
	cout<<"Enter number: ";

	// get data from the user, one character at a time
	while(cin.get(singleNum) && singleNum != 'n')
	{
		// only numbers will be saved into the array, everything
		// else is ignored
		if(isdigit(singleNum))
		{
			// this converts a char into an integer using ascii values
			numberArry[numElems] = (singleNum)-'0'; 
			++numElems;
		}
	}

	cout<<endl;

	// using the data from the array, display the
	// numbers to the screen using a switch statement
	for(int index=0; index < numElems; ++index)
	{
		switch(numberArry[index])
		{
			case 0 :
				cout<<"Zero ";
				break;
			case 1 : 
				cout<<"One ";
				break;
			case 2: 
				cout<<"Two ";
				break;
			case 3: 
				cout<<"Three ";
				break;
			case 4:
				cout<<"Four ";
				break;
			case 5:
				cout<<"Five ";
				break;
			case 6:
				cout<<"Six ";
				break;
			case 7:
				cout<<"Seven ";
				break;
			case 8:
				cout<<"Eight ";
				break;
			case 9:
				cout<<"Nine ";
				break;
			default:
				cout<<"nERROR!n";
				break;
		}
	}
	cout<<endl;

	return 0;
}// http://programmingnotes.org/
			
				
					
				
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						#include <iostream>
#include <cctype>
using namespace std;
 
int main()
{
	// declare variables
	int numberArry[50];
	int numElems=0;
	char singleNum=' ';
 
	// ask the user for a number
	cout<<"Enter number: ";
 
	// get data from the user, one character at a time
	while(cin.get(singleNum) && singleNum != 'n')
	{
		// only numbers will be saved into the array, everything
		// else is ignored
		if(isdigit(singleNum))
		{
			// this converts a char into an integer using ascii values
			numberArry[numElems] = (singleNum)-'0'; 
			++numElems;
		}
	}
 
	cout<<endl;
 
	// using the data from the array, display the
	// numbers to the screen using a switch statement
	for(int index=0; index < numElems; ++index)
	{
		switch(numberArry[index])
		{
			case 0 :
				cout<<"Zero ";
				break;
			case 1 : 
				cout<<"One ";
				break;
			case 2: 
				cout<<"Two ";
				break;
			case 3: 
				cout<<"Three ";
				break;
			case 4:
				cout<<"Four ";
				break;
			case 5:
				cout<<"Five ";
				break;
			case 6:
				cout<<"Six ";
				break;
			case 7:
				cout<<"Seven ";
				break;
			case 8:
				cout<<"Eight ";
				break;
			case 9:
				cout<<"Nine ";
				break;
			default:
				cout<<"nERROR!n";
				break;
		}
	}
	cout<<endl;
 
	return 0;
}// http://programmingnotes.org/

QUICK NOTES:
The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

Once compiled, you should get this as your output
Note: The code was compiled four separate times to display different output

======= Run #1 =======
Enter number: 77331 Seven Seven Three Three One ======= Run #2 ======= Enter number: 234-43-1275 Two Three Four Four Three One Two Seven Five ======= Run #3 ======= Enter number: 1(800) 123-5678 One Eight Zero Zero One Two Three Five Six Seven Eight ======= Run #4 ======= Enter number: This 34 Is 24 A 5 Number 28
Three Four Two Four Five Two Eight

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Posted in: Basic, C++ Tags: array, c++, char, for loop, if/else

C++ || Convert Numbers To Words Using A Switch Statement

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