C Program To Convert Digits Into Face Value

#include<stdio.h>
#include<conio.h>
struct std{
            int dig;
            char wrd[20];
               };
struct std fig[]={{1,"one"},{2,"two"},{3,"three"},{4,"four"},{5,"five"},{6,"six"},{7,"seven"},{8,"eight"},{9,"nine"},{10,"ten"},{11,"eleven"},{12,"twelve"},{13,"thirteen"},{14,"fourteen"},{15,"fifteen"},{16,"sixteen"},{17,"seventeen"},{18,"eighteen"},{19,"nineteen"},{20,"twenty"},{30,"thirty"},{40,"fourty"},{50,"fifty"},{60,"sixty"},{70,"seventy"},{80,"eighty"},{90,"ninety"}};
int num1[5],i;
op0(long num)
{
  for(i=0;i<20;i++)
   if(fig[i].dig==num)
    printf("%s",fig[i].wrd);
}
op1(long num)
{ //num1=num;


  num1[0]=num/10;
  num1[0]=num1[0]*10;
  num1[1]=num%10;
  for(i=0;i<27;i++)
  {if(fig[i].dig==num1[0])
    printf("%s ",fig[i].wrd);
  }
  for(i=0;i<20;i++)
  {if(fig[i].dig==num1[1])
    printf("%s",fig[i].wrd);
  }

}
op2(long num)
{
 int k,j=num%100;
 k=num/100;
 for(i=0;i<10;i++)
 {if(fig[i].dig==k)
   {printf("%s hundred ",fig[i].wrd);
    if(j>0&&j<20)
    op0(num%100);
    else
   op1(num%100);
   }
  }
}
op3(long num)
{
 int k,j=num%1000;
 k=num/1000;
 for(i=0;i<10;i++)
 { if(fig[i].dig==k)
   { printf("%s thousand ",fig[i].wrd);
     if(j>=1&&j<10)
     op0(num%1000);
     else if(j>10&&j<100)
     op1(num%1000);
    else
     op2(num%1000);
    }
  }
}
op4(long num)
{
 int k=num/1000,j;
 j=num%1000;
 if(k<=20)
 {
  op0(num/1000);
  printf(" thousand ");
  if(j>0&&j<10)
    op0(num%1000);
    if(j>10&&j<100)
    op1(num%1000);
   else op2(num%1000);
   }
if((k>20)&&(k<100))
{
op1(num/1000);
printf(" thousand ");
if(j>0&&j<10)
  op0(num%1000);
 if(j>10&&j<100)
    op1(num%1000);
else op2(num%1000);
}
//op2(num%1000);
}
op5(long num)
{
 int k=num/100000;
 int j=num%100000;
 for(i=0;i<10;i++)
 { if(fig[i].dig==k)
   { printf("%s lakh ",fig[i].wrd);
     if(j>0&&j<20)
     op0(num%100000);
     if(j>20&&j<100)
     op1(num%100000);
     if(j>100&&j<1000)
     op2(num%100000);
     if(j>1000&&j<10000)
     op3(num%100000);
     if(j>10000&&j<100000)
     op4(num%100000);

    }
  }
}
main()
{
 long num;
 clrscr();
 printf("\n\nEnter the number lessthan one lack\n\n");
 scanf("%ld",&num);
 if(num<=20)
op0(num);
if((num>20)&&(num/100==0))
op1(num);
if(num==100)
printf("hundred");
if(num>100&&num<1000)
op2(num);
if(num==1000) printf("\none thousand");
if(num>1000&&num<10000)
op3(num);
if(num==10000) printf("\nten thousand");
if(num>10000&&num<100000)
op4(num);
if(num==100000) printf("\none lakh");
if(num>100000&&num<1000000)
op5(num);
if(num==1000000)
printf("\nOne crore");
getch();
}

Sample Output :
      Enter the number lessthan one lack
99999
ninety nine thousand nine hundred ninety nine