C++ Program to Convert Number in Characters

Implementation in C++

#include<iostream>
using namespace std;
void NumtoChar(int x)
{
    int r = 0, a = 0;

    while (x > 0) {
 
        a = x % 10;
        r = r * 10 + a;
        x = x / 10;
    }
 
    while (r > 0) {
        a = r % 10;
        
        switch (a) {
        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;
        case 0:
            cout << "ZERO ";
            break;
        default:
            cout << "inValid Input ";
            break;
        }

        r = r / 10;
    }
}

int main()
{
    int x;
    cout<<"enter a number that is greater than 0 :"<<endl;
    cin>>x;
    NumtoChar(x);
    return 0;
}

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Output: 

Input: 
enter a number that is greater than 0 :
457
FOUR FIVE SEVEN

You can also try this code with Online C++ Compiler

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Complexity Analysis

Time complexity: O(x), where x is the length of the number

Space complexity: O(1)

Try and compile by yourself with the help of online C++ Compiler for better understanding.

Related Article Swap Two Numbers Without Using Third Variable

Must Read Dynamic Binding in C++

Also Read - Strong number in c

Frequently Asked Questions

What is the difference between switch cases and loops in c++?

What are arithmetic operators in c++?

Arithmetic Operators are symbols that perform mathematical operations on variables.

Some of the commonly used operators are 

Addition operator: +

Subtraction operator: -

Multiplication operator : *

Division operator: /

Modulo operator: %

What is use of cout in c++ code?

Cout is an object used to print output to standard output devices. It is declared in the header file known as iostream.h

Conclusion

In this article, we have discussed the problem of converting a number in characters. We have discussed the solution to this problem coded in C++ language. We have also discussed the time complexity of the approach. 

Also read -  Decimal to Binary c++

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