Pass strings to running program in c from terminal

I want to test my program which is structured this way:

// in main
do {
    printf("insert move \n");
    fgets(move, 7, stdin);

     // stuff

} while (/* condition */);

Basically it has a loop where it reads the user input and do stuff...

I want my test to pass to this loop a set of n strings.

how can i do?