I want to print strings randomly

Run the rand() function to obtain a random value.
Usually, before you use the rand() function, you run a function that sets a seed value called srand(), but if you search for the rand() function, you'll find many examples.
You can pre-declare multiple strings as a string array, get random numbers, index the array, and get the string.
http://www.cplusplus.com/reference/cstdlib/rand/