Thread: Program to convert 2 digit number to corresponding english word

Hi everyone,
Just started learning C.I have to create a program using only switch case to convert 2 digit number to their respective english word.This is code i came up with..

Code:

# include <stdio.h>
main()
{
      int digit;
      printf("Enter a two-digit number:");
      scanf("%d",& digit);
      
      if(digit<10 || digit>99)
      {printf("Incorrect value!Please enter the two-digit number again.");}
      
      printf("You have entered the number ");
                 
      switch (digit/10)
      {
       case 2:printf("Twenty-");
       break;
       case 3:printf("Thirty-");
       break;
       case 4:printf("Forty-");
       break;
       case 5:printf("Fifty-");
       break;
       case 6:printf("Sixty-");
       break;
       case 7:printf("Seventy-");
       break;
       case 8:printf("Eighty-");
       break;
       case 9:printf("Ninety-");
       break;
       }
 switch (digit%10)
       {
       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;
       }
return 0;
}

But in this code i cannot print nos from 10 to 19.Can anybody suggest me ways to do it?
Thanks a lot!!

add a case 1 to the first switch and have a nested switch for all the different ten eleven twelve etc, and have the 2nd switch inside an if (digit<10 || digit>19)

Thanks EPY!!It worked!!I didnt know switch could be nested!learnt something new!!
@quzah, we havent gone uptil array...but will definitely try it out once i learn more about arrays!!Thanks for the advice though!!

Code:

# include <stdio.h>
main()
{
      int digit;
      printf("Enter a two-digit number:");
      scanf("%d",& digit);
      
      if(digit<10 || digit>99)
      {printf("Incorrect value!Please enter the two-digit number again.\n");}
      
      printf("You have entered the number ");
                 
      switch (digit/10)
      {
       case 1:
            switch (digit)
            {
       case 10:printf("Ten");            
       case 11:printf("Eleven");
       break;
       case 12:printf("Twelve");
       break;
       case 13:printf("Thirteen");
       break;
       case 14:printf("Fourteen");
       break;
       case 15:printf("Fifteen");
       break;
       case 16:printf("Sixteen");
       break;
       case 17:printf("Seventeen");
       break;
       case 18:printf("Eighteen");
       break;
       case 19:printf("Nineteen");
       break;
       }
       break;
       case 2:printf("Twenty-");
       break;
       case 3:printf("Thirty-");
       break;
       case 4:printf("Forty-");
       break;
       case 5:printf("Fifty-");
       break;
       case 6:printf("Sixty-");
       break;
       case 7:printf("Seventy-");
       break;
       case 8:printf("Eighty-");
       break;
       case 9:printf("Ninety-");
       break;
       }
       
       if (digit<10 || digit>19)
       {{switch (digit%10)
       {
       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;
       }
       }
       return 0;
 }
}

Yay!!