string array text search

[ery]

looking for algorithm for homework c++
search in a text number of sentences ending with ? or . ,words,chr.numbers of longest word and number of words in longest sentence,average chrs. number of words?
search another text in the source text and his frequency?

thanks for any advice.

[*pointer]

Do you have anything yet? At least try to do it on your own and if you can't, then ask for help.

[ery]

ý will try it with switch/case and modular programs?!