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We are in a position to write some programs on strings now.
Example
 
21: Write a C program to write a given figure in words. Use the switch statement.
Solution 21:
 The program is as follows:
#include
main( )
{
    int digit[10], num, temp, i, j, k;
    printf(“\n\t Enter your number:”);
    printf(“%d\n”, num);
    temp = num;
    i = 0;
    while (num != 0)
     {
       digit[i++] = num – num/10 * 10;
       num = num/10;
     }
     j = - - i;
     printf (“\nThe number in words is:”);
     for (k=j; k>=0; k - - )
      {
        switch (digit[k])
         {
           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;
           case 10:
                printf(“ten”);

---

                break;
           default:
                break;
           }
         }
         printf(“\n”);
       }