Delete krypto2.c

week1/krypto2.c

-#include <stdio.h>
-
-void encrypt ();
-void decrypt ();
-
-int main (void)
-{
-	char valik;
-
-	printf ("Do you wish to encrypt or decrypt?\n");
-	do
-	{
-		printf ("Please enter a valid option(e/d):");
-		scanf ("%c", &valik);
-	} 
-	while (valik != 'e' && valik != 'd');
-
-	if (valik == 'e')
-	{
-		encrypt ();
-	}
-	else if (valik == 'd')
-	{
-		decrypt ();
-	}
-	else
-	{
-		printf ("option does not exist");
-	}
-
-	return 0;
-}
-
-void encrypt ()
-{
-	char ni[80] = "sisend.txt", no[80] = "tul.txt";
-	char c;
-	int key;
-	int caesar;
-
-	FILE *fi, *fo;
-	fi = fopen (ni, "r");
-	fo = fopen (no, "w");
-
-	printf ("Enter the encryption key to encrypt: ");
-	scanf ("%d", &key);
-	do
-	{
-		c = fgetc(fi);
-		if (feof(fi))
-		{
-			break;
-		}
-
-		if (c >= 65 && c <= 90)
-		{ 
-			if ((c + key) > 90)
-			{
-				caesar = c - (26 - key);
-			}
-			else
-			{
-				caesar = (int)c + key;
-			}
-		}
-		else if (c >= 97 && c <= 122)
-		{
-			if ((c + key) > 122)
-			{
-				caesar = c - (26 - key);
-			}
-			else
-			{
-				caesar = (int)c + key;
-			}
-		}
-
-		printf ("%c", caesar);
-		fprintf (fo, "%c", caesar);
-	}
-	while (1);
-	printf (" \n");
-}
-
-void decrypt ()
-{
-	char ni[80] = "sisend.txt", no[80] = "tul.txt";
-	char c;
-	int key;
-	int caesar;
-
-	FILE *fi, *fo;
-	fi = fopen (ni, "r");
-	fo = fopen (no, "w");
-
-	printf("Enter the encryption key to decrypt: ");
-	scanf ("%d", &key);
-	do
-	{
-		c = fgetc(fi);
-		if (feof(fi))
-		{
-			break;
-		}
-
-		if (c >= 65 && c <= 90)
-		{ 
-			if ((c - key) < 65)
-			{
-				caesar = c + (26 - key);
-			}
-			else
-			{
-				caesar = (int)c - key;
-			}
-		}
-		else if (c >= 97 && c <= 122)
-		{
-			if ((c - key) < 97)
-			{
-				caesar = c + (26 - key);
-			}
-			else
-			{
-				caesar = (int)c - key;
-			}
-		}
-
-		printf ("%c", caesar);
-		fprintf (fo, "%c", caesar);
-	}
-	while (1);
-	printf (" \n");
-}
-