I need help to use asci codes

[Tayfun]

i have an assignment to write c++ program that should be very easy but i am very new to write codes in c++. My topic is that encryption of "sweidon" and i ll replace each letter with the three places later in the alphabet. For example, Instead of writing "A" , i ll write "D" .... I couldn't find out how can i write it in codes.

i think i should use ASCI and i should add 3 upon the ASCI code to reach the encryption code.... how should i write to read all letters that is inclued in family name of "sweidon" ????

[jkrohn]

Read them in as characters. Then cast to ints.

char blah = 's';
int code = (int)s;
code += 3;
blah = char(code);

[Tayfun]

so should i write for loop for other char, shouldn't i ? or i ll input the chr. one-by-one

[jkrohn]

you should take input as a character array and loop through it.

[Tayfun]

all right then, i ll try immediatly... thnx so much

[originel]

you don't even have to typecast because a char is an 8-bit int anyways.

to shift it three places you just add 3 to it...it's that simple

char letter = 'A';
letter += 3;

letter equals 'D' after this. A little side note about characters, the syntax 'A' is just another way of writing 0x41. It's like a placeholder really and is actually an integer, and so you can do any integer stuff with a char (with the exception of passing to functions and some more complex memory stuff since it's 8 bits, not 32 bits).