heres the whole code if that helps!
CODE
#include <stdio.h>
#include <string.h>
void menu ( void ) {
printf("Please enter a number: \n"
"1-Encrypt\n"
"2-Decrypt\n"
"3-Exit\n"
"prompt > ");
fflush( stdout );
}
int getchoice ( void ) {
char buff[BUFSIZ];
int choice = 0;
do {
menu();
if ( fgets( buff, sizeof buff, stdin ) != NULL ) {
/* success reading a line, does it make sense? */
if ( sscanf( buff, "%d", &choice ) != 1 ) {
printf( "Enter a number\n" );
}
} else {
/* user EOF, just exit now */
choice = 3;
}
} while ( choice < 1 || choice > 3 );
return choice;
}
void encode ( void )
{
char buff[BUFSIZ];
int i = 0;
int shift_value;
printf( "Doing encrypt\n" );
printf("\nPlease enter the text you wish to encrypt: ");
fgets(buff, sizeof(buff), stdin);
if ("%s" > 'Z')
{
"%s" -= 'Z' - 'A';
}
printf("\nEnter your encryption shift value (anything from +-1 to 25): ");
scanf ("%i", &shift_value);
{
while ( buff[i] != '\0' )
{
buff[i] = buff[i] + shift_value;
i++;
}
}
printf("\n Your encrypted text is: %s \n", buff);
}
void decode ( void )
{
char buff[BUFSIZ];
int i = 0;
int shift_value;
printf( "Doing decrypt\n" );
printf("\nPlease enter the text you wish to decrypt: ");
fgets(buff, sizeof(buff), stdin);
printf("\nEnter your encryption shift value (anything from +-1 to 25): ");
scanf ("%i", &shift_value);
{
while ( buff[i] != '\0' )
{
buff[i] = buff[i] - shift_value;
i++;
}
}
printf("\nYour decrypted text is: %s \n", buff);
}
int main ( ) {
int choice;
while ( (choice=getchoice()) != 3 ) {
if ( choice == 1 ) {
encode();
} else
if ( choice == 2 ) {
decode();
}
}
return 0;
}
21 Nov, 2005 - 09:12 PM
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