Write a C program to print numbers in word. In this article, we will learn how to print a number in a word using a switch case and a while loop.

Sample Input

Enter Number: 7657

Sample Output

Number in words: seven six five seven

Algorithm to print numbers in words

• Declare one variable and initialize the second variable.
• Then take an input.
• Take two while loops and in one loop give the condition of reverse number in another loop create a switch case in it.
• Give conditions and cases in the switch case.

C program to print numbers in words

#include<stdio.h>
void main (){
  int n;
    int num=0;
  
  printf("entre any number to print in word");
  scanf("%d",&n);
  
  while(n!=0){
    num=(num*10)+(n%10);
    	n/=10;
    	           }
    		while(num!=0){
    switch(num%10){
      case  0 :
      printf("zero ");
      break;
      case 1 :
      printf("one ");
      break;
      case 2 :
      printf("two ");
      break;
      case 3 :
      printf("three ");
       break;
      case 4 :
      printf("four ");
      break;
      case 5 :
      printf("five ");
      break;
      case 6 :
      printf("six ");
      break;
      case 7 :
      printf("seven ");
      break;
      case 8 :
      printf("eight ");
      break;
      case 9 :
      printf("nine ");
      break;	
    }
    num=num/10;
     }
}

Explanation of the source code

Step 1: start.

Step 2: Create a header file and include the library (studio. h).

Step 3: Create the main function.

Step 4: Then declare a variable ( n ) and initialize the second variable ( num=0 ).

Step 5: Then take input with the help of scanf for the number taken from the user to print into word.

Step 6: Create two while loop one for the condition of reverse number and another for switch case

• In first loop give condition of reverse number ( (num*10)+(n%10)and num/=10 ) .
• In the second loop take the switch case: In a while loop give num!=0 give this condition, Switch case give num!=0 this condition.
• Then create the ten cases in the switch case as shown in the code from line number 15 to 43.

Step 7: Then give  ( num=num/10 )  this condition in the last after close switch case.

Step  8: End.

Output

In this way, we learned how to write a C program to print numbers in words.