To implement Rail-Fence cipher encryption- decryption in C. (WITH OUTPUT IMAGE)

#include<stdio.h>

#include<conio.h>

void main()

{

int i,j,count,plen,devide,clen;

char p1[2][50],p2[2][50],p[100],e[100],d[100];

clrscr();

printf("Enter plaintext::::::");

gets(p);

plen=strlen(p);

devide=plen/2;

puts(p);

count=0;

for(i=0;i<devide+1;i++)

{

  for(j=0;j<2;j++)

  {  if(p[count]!='\0')

     {p1[j][i]=p[count];

     count++;

     }

     else

     p1[j][i]='\0';

  }

}

p1[j][i]='\0';

for(i=0;i<2;i++)

{printf("\n");

for(j=0;j<devide+1;j++)

  {

   printf("%c",p1[i][j]);

  }

}

count=0;

for(i=0;i<2;i++)

{printf("\n");

for(j=0;j<devide+1;j++)

  { if(p1[i][j]!='\0')

   e[count++]=p1[i][j];

  }

}

e[count]='\0';

printf("\n ENCRYPTED TEXT:::::::::::::::::::::::::::::::::::");

for(j=0;j<count;j++)

printf("%c",e[j]);

//Decryption part:::::::::::::::::::::::::::::::::::::::::::::::::::::::

clen=strlen(e);

count=0;

for(i=0;i<2;i++)

{printf("\n");

 for(j=0;j<(clen+1)/2;j++)

 {if(e[count]!='\0')

  p2[i][j]=e[count++];

 }

}

count=0;

for(j=0;j<(clen+1)/2;j++)

{

  for(i=0;i<2;i++)

  { if(p2[i][j]!='\0')

   d[count++]=p2[i][j];

  }

}

d[count]='\0';

printf("\n DERYPTED TEXT::::::::::::::::::::::::::::::::::::::::::::");

for(i=0;i<count;i++)

printf("%c",d[i]);

getch();

}

OUTPUT: