Run Length Encoding

/* C Program For The Implementation Of RUN LENGTH ENCODING */

#include< stdio.h>
#include< conio.h>
#include< string.h>
void main()
{
int i,j,cnt,l,count[50]={0};
char str[50];
clrscr();
printf("Enter the string: ");
scanf("%s",str);
printf("\n\tOriginal String is: %s",str);
printf("\n\n\tEncoded String is: ");
l = strlen(str);
for(i=0;i< l;i*=1)
{
j = 0;
count[i] = 1;
do
{
j++;
if(str[i+j] == str[i])
count[i]++;
}while(str[i+j]==str[i]);
if(count[i]==1)
printf("%c",str[i++]);
else
{
printf("$%d%c",count[i],str[i]);
i += count[i];
}
}
getch();
}
/************************* OUTPUT ************************
Enter the string: sleepzzzzzzzzzzzzzzzzzzz

Original String is: sleepzzzzzzzzzzzzzzzzzzz

Encoded String is: sl$2ep$19z */