char array read

    c++ (maybe c) question time
    i need to make a string class. i'm not allowed to use the c++ one.
    so what i don't get is how the fuck i read a string and save it into a array. i mean, i just don't see how. i've been looking around but i don't find anything that fits what i need
    all i need is that. reading a string and saving it into an array. if someone can guide me i'd be thankful.

    also it has to be dynamic, so no char arr[1000000000000000]

How do others pronounce the OMG OPTIMIZED and VROOM VROOM effects? I used to imagine them in deep, announcer-type voices, but just now realized they are quite amusing in the high-pitched voice you would expect such a cat to have.