Thread: change text

Now that I know how to use a switch with this problem I would like to khow how to use tables such as:

encode[] = {'a', 'b', 'c', 'd'};
decode[] = {'l', 'j', 'g', 'w'};

I want to be able to reverse what I encoded. A switch does not seem to be the way to do it since I don't think I can reverse a switch without rewriting the cases.....

Any idea on how to proceed!!!!

need the help badly!

You could always encode the test using an exclusive or statement though its not too secure unless every value you use to encode with is different, ie:

Code:

char password[10];
char text[50];
char newtext[50];
int passlength;
int passcounter;
int textlength;
int textcounter;


// ASSIGN TEXT AND GET PASSWORD

passlength=strlen(password);
passcounter=0;
textlength=strlen(text);
textcounter=0;

for(textcounter=0;textcounter<textlength;textcounter++,passwordcounter%=passlength)
  newtext[textcounter] = text[textcounter] ^ password[passwordcounter]

newtext[textlength]='\0';

only problem is it will encode every letter in the text, to decode the text just run the text through the program again, using the exact same password. I think the ^ is XOR, not 100% though.