The program will ask the user for a two-digit number and then prints the English

Question

The program will ask the user for a two-digit number and then prints the English translation of that number. This program will only work for positive numbers in the range [10,99]. Three example runs of this program are shown below. User input is underlined.

Enter a two-digit number: 39 You entered the number thirty-nine.
Enter a two-digit number: 13 You entered the number thirteen.
Enter a two-digit number: 60 You entered the number sixty.

We are not far in the book only to chapter 5 of where we discuss switch statements.
#include

int main(void)

{ int firstDigit, secDigit;

printf("Enter the first digit of the number:");
scanf("%d",&firstDigit);
printf("Enter the second digit of the number:");
scanf("%d",&secDigit);


get to there then I get lost not even sure if this is the most effircient way to do it???

Explanation / Answer

please rate - thanks #include <stdio.h>
#include<conio.h>
int main()
{int n,units,tens;
printf("Enter a two-digit number:(0 to exit): ");
scanf("%d",&n);
while(n!=0)
{  
while(n<10||n>99)
   {printf("Please enter positive numbers between 10 and 99 ");
    printf("Enter a two-digit number:: ");
    scanf("%d",&n);
    }
printf("You entered the number ");
units=n%10;
tens=n/10;
switch(tens)
   {case 1: switch(units)
             {case 9:printf("nineteen");
                      break;
              case 8: printf("eighteen");
                      break;
              case 7: printf("seventeen");
                      break;
              case 6: printf("sixteen");
                      break;
              case 5: printf("fifteen");
                      break;
              case 4: printf("fourteen");
                      break;
              case 3: printf("thirteen");
                      break;
              case 2: printf("twelve");
                      break;
              case 1: printf("eleven");
                      break;                                                               
              case 0: printf("ten");
                      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("ninty ");
            break;
      }         
if(n>20)
       {switch(units)
           {case 9: printf("nine");
                    break;
            case 8: printf("eight");
                      break;
              case 7: printf("sevent");
                      break;
              case 6: printf("six");
                      break;
              case 5: printf("five");
                      break;
              case 4: printf("four");
                      break;
              case 3: printf("three");
                      break;
              case 2: printf("two");
                      break;
              case 1: printf("one");
                      break;                    
                      }
            }
printf(" ");
printf("Enter a two-digit number:(0 to exit): ");
scanf("%d",&n);
}


getch();
return 0;
}

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