/*******************************************************************/
//   Num-to-Word v1.0                                              //
//         May be used as under the GPLv2 license                  //
//                                           Coded by KillerJ59J   //
/*******************************************************************/
#include<stdio.h>

main()
{
 char *ones[] = {"","one","two","three","four","five","six","seven","eight","nine"};
 char *eles[]= {"ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen"};
 char *tens[]={"twenty","thirty","forty","fifty","sixty","seventy","eighty","ninety"};
    
    printf("Use this program to convert a number to it's word form.\n          To exit type 0 and click enter.\n");
    int num,dnum,go=1;
    while(go){
	 printf("Enter number <=1000:");
	 scanf("%d",&num);
 	 dnum=num;
     if (dnum < 0)dnum = -dnum;
     int digits = 1;
     dnum = dnum/10;
     while( dnum > 0)
     {
      digits++;
	  dnum = dnum/10;
      }
      if(num==0)go=0;
      
      if(num<1||num>1000)digits=0;
      if(num==1000)
      {
       printf("\nonethousand");
       digits=0;
      }
      
      switch(digits)
      {
       case 0:
       break;
       
       case 1:
            printf("\n");
            printf("%s",ones[num]);
       break;
       case 2:
            printf("\n");
            if(num>=10&&num<20)
            {
             int one=num-10;
             printf("%s",eles[one]);
            }
            if(num>=20)
            {
             int one=num;
             while(one>=10)one=one-10;
             
             int ten=num;
             ten=ten-one;
             ten=ten/10;
             printf("%s",tens[ten-2]);
             printf("%s",ones[one]);
            }
       break;
        
      case 3:
           printf("\n");
           int elv=num,teen=0;
           while(elv>=100)elv=elv-100;
           
           if(elv>=10&&elv<20)
           {
           elv=elv-10;
           teen=1;
           }
           int one=num;
           while(one>=10)one=one-10;
           
           int ten=num;
           ten=ten-one;
           while(ten>=100)ten=ten-100;
           
           ten=ten/10;
           int hundred=num;
           hundred=hundred-ten;
           hundred=hundred-one;
           hundred=hundred/100;
           printf("%s",ones[hundred]);
           printf("hundred");
           if(teen)
           {
            printf("%s",eles[elv]);
           }else if(ten==0){
                            printf("%s",ones[one]);
                            }else{
                            printf("%s",tens[ten-2]);
                            printf("%s",ones[one]);
                            }
      break;
      
      default:
              printf("Sorry, your number was either too high or too low, please try again.");
      break;
    }
    printf("\n");
    printf("\n");
  }
  printf("Thanks for using!\nCoded by: KillerJ59J\n");
  system("PAUSE");
  return 0;
}