check if string consists of vowels only

returns lexicographically first string in a vector of strings

returns lexicographically last string in a vector of strings

ask user for a yes-or-no answer; return 'b' to indicate a bad answer (i.e., not yes or no)

build dictionary file

convert celsius to fahrenheit

take string from input, feed to calculator, print result to output

expression evaluation loop

expression evaluation loop

expression evaluation loop

expression evaluation loop

expression evaluation loop

expression evaluation loop: read input from string

the current size

the current size

print for each character all its classifications

exercise 8

calculates integer from vector of characters

checks guess for bulls and cows first loop for bulls, second loop for cows

the current size ...

clean input after error

clean input after error