C + + lowercase digits to uppercase digits

#include <stdio.h>
void Main ()
{
Double x,y;
Char *ch[]={"0", "one", "II", "three", "Restaurant", "WU", "Lu", "Qi", "ba", "Nine"};
Char *ch1[]={"Pick Up", "Bai", "Thousand", "Million", "Pick Up", "Bai", "thousand", "billion"};
Char num[256];
Long i,n,j,m,y1;
printf ("Input:");
scanf ("%lf", &x);
n= (long) x;/* integral part/
y=x-n;/* to the small number of parts
for (i=0;n!=0;i++)
{
Num[i]= (char) (N%10);
n/=10;
}
M=i;
Num[i]= '. ';
for (y=y*10; (long) (y) *10);)/* If the decimal place or number (not 0) the loop continues * *
y*=10;/* decimal converts to integers such as 0.11111 to 11111.00...*/
y1= (long) y;
for (i=m+1;y1!=0;i++)
{num[i]= (char) (Y1%10);
Y1=Y1/10;} * * Take the numbers on you
for (n=0;; n++)
{
if (num[n]== '. ')
{
for (j=n-1;j>=0;j--)/* Judge whether is million, billion bit. If you judge whether it is 0 then do not output 0. * *
{
if (m<=5)
if (m==5&& (int) num[j]==0)
;
Else
printf ("%s", ch[(int) num[j]);/* Output Uppercase one ... */
Else
if (m%4==0&& (int) num[j]==0)
;
Else
printf ("%s", ch[(int) num[j]]);
if (m>=2)
{printf ("%s", ch1[m-2]);/* Output pick up. If you have 2 digits to the output/
m=m--;}
}
printf ("point");
Break
}
}
for (i=i-1;num[i]!= '. ') i--)
printf ("%s", ch[(int) num[i]);//Output Decimal Part * *
}