Caesar Cipher

[msomoles]

I am making a simple caesar cypher with a 2D array

I have to make a function for the key shift so

key=5
ABCDEFGHIJKLMNOPQRSTUVWXYZ
FGHJKL...ABCDE

Function Name: Key_Array
This function uses the random key value to make a key array
Passed: value = random key value
Returns: alphabet = rearranged alphabet
*******************************************************************/
char Key_Array(int key)
{
string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
for (int i=0;i<26;i++)
{

if (alphabet[i] >= 'A' && alphabet[i] <= 'Z')
{
alphabet[i] = (((alphabet[i] + key - 'A' + 25) % 26) + 'A');
return alphabet[i];
}
}
}



I am having trouble outputting the rearranged alphabet to the screen also.

Yes this is a homework project. So answer as soon as possible.
Please and Thank you.

[JockX]

This function returns single character. Did you mean to output each character instead of returning it?

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void Key_Array(int key) { string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; for (int i=0;i<26;i++) { if (alphabet[i] >= 'A' && alphabet[i] <= 'Z') { alphabet[i] = (((alphabet[i] + key - 'A' + 25) % 26) + 'A'); cout << alphabet[i]; } } cout << endl; } int main() { //call like this once: Key_Array(5); }

EFGHIJKLMNOPQRSTUVWXYZABCD