Help in C++

Jump to level 1 Declare a Boolean variable named goodPasswd. Use goodPasswd to output 'Valid' if codeStr contains at least 3 letters and codeStr's length is less than 8, and "Invalid" otherwise. Ex. If the input is w t9 T78, then the output is: Valid Ex: If the input is V4XRisir, then the output is: Invalid Note. isalpha ( returns true if a character is alphabetic, and false otherwise. Ex. isalpha(a) returns true. isalpha(8) returns false