Question

I want to combine both the for loops into single for loop. How can i do that?

I want to loop through a to z, and A to Z, like so:

char ch;
for (ch = 'A' ; ch <= 'Z' ; ch++ )
{ 
}
for (ch = 'a' ; ch <= 'z' ; ch++ )
{
}

but using a single loop.

Answer 1

I don’t personally like this solution, but:

char * letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
for (char * ptr = letters; *ptr != 0; ++ptr) {
    char ch = *ptr;
    ...
}