bit stuffing sending and receiving

#include<stdio.h>

int sender(char str[],char ptr[],char dest[])

{

int i,j=0,k=0,c=0,count=0;

for(k=0;k<8;k++)

{

 if(k==0||k==7)

  dest[k]='0';

 else

  dest[k]='1';

}

for(i=0;str[i]!='\0';i++)

{

 count++;

if(str[i]==ptr[j])

{

dest[k]=str[i];

c++;

k++;

if(c==5)

{

 dest[k]='0';

 k++;

 j=0;

 c=0;

}

}

else

{

 dest[k]=str[i];

 k++;

 j=0;

 c=0;

if(str[i]=ptr[j])

{

 c++;

 j++;

}

}

}

j=0;

while(ptr[j]!='\0')

{

 dest[k]=ptr[j];

 k++;

 j++;

}

dest[k]='1';

dest[k+1]='0';

dest[k+2]='\0';

printf("\nString send from sender side \n%s",dest);

return count;

}

/*int receiver(char result[],char dest[])

{

 int i=0,j=0,k=0,count;

 for(k=8;dest[k]<a+8;k++)

 {

  result[i]==dest[k];

  i++;

 }

printf("strring receive from receiver is %s",result);

}*/

void main()

{

 char ptr[10]={'0','1','1','1','1','1','\0'};

char dest[100];

char str[100];

char result[100];

char flag[10]={'0','1','1','1','1','1','1','0','\0'};

 int i,j,a;

 printf("Enter the string:- \n");

 scanf("%s",str);

 sender(str,ptr,dest);

//printf("\nstrring receive from receiver is %s",str);

}