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Convert Numbers into Words

Roopa has given a program to her close friend Jhansi in the apartment where she lives. The task is if the number is given it needs to be converted into words.

It’s like writing the amount in numbers on the cell of the bank challan and then writing it in words.

Input:
The first input contains an integer T denoting the number of test cases.

The first line of each test case is N.

Output:
Print the number into words (in small letter)
#include <stdio.h>
#include <string.h>
int main()
{
 const char *a[]={ "zero" , "one" , "two" , "three" , "four" , "five" , "six" , "seven" ,
"eight" , "nine" };
 const char *b[]={ "ten" , "eleven" , "twelve" , "thirteen" , "fourteen" , "fifteen" ,
"sixteen" , "seventeen" , "eighteen" , "nineteen" };
 const char *c[]={ " " , " " , "twenty" , "thirty" , "forty" , "fifty" , "sixty" , "seventy" ,
"eighty" , "ninety" };
 //const char *p[]={"hundred" , "thousand" };
 char num[10];
 int l,n,n1;
 scanf("%s",num);
 l=strlen(num);
 if(l==4)
 {
   while(l--)
 {
   if(l==3&&num[0]!='0')
   {
     printf("%s thousand ",a[*num- '0']);
   }
   if(l==2 && num[1]!='0' && num[2]=='0'&&num[3]=='0')
   {
     n=num[1]-48;
     printf("%s hundred ",a[n]);
     break;
   }
   if(l==2 && num[1]!='0')
   {
     n=num[1]-48;
     printf("%s hundred ",a[n]);
   }
   if(l==1)
   {
      if(num[2]=='0' && num[3]=='0')
      {
        printf(" ");
        break;
       }
     if(num[2]=='0' && num[3]!='0')
     {
      n=num[3]-48;
      printf("%s",a[n]);
      break;
     }
     if(num[3!='0' && num[2]!='1']&& num[2]!='0')
     {
      n=num[2]-48;
      n1=num[3]-48;
      printf("and %s %s",c[n],a[n1]);
      break;
     }
     if(num[3]=='0');
     {
      n=num[2]-48;
      printf("and %s",c[n]);
      break;
     }
     if(num[2]=='1');
     {
      n=num[3]-48;
      printf("and %s",b[n]);
      break;
     }
   }
  }
 }
printf("\n");
return 0;
}

INPUT_1:
9851

OUTPUT:
nine thousand eight hundred and fifty one

INPUT_2:
3462

OUTPUT:
three thousand four hundred and sixty two

Morae Q!