Create a command shell/menu in C

Question

Hi

As a Java programmer who wants to learn C, I try to create a command line based menu in C. The menu should read a line that is split by spaces that are divided into a matrix. Below are some Java code that does what I want: Can someone please help me to create a menu in C with this functionality?

while(scan.hasNextLine()) {
            String line = scan.nextLine();
            String [] command = line.split(" ");

            if(command[0].equals("c") && command[1] != null) {
                     ......

C:

char line[LINE_MAX];
    char *command;

    if(fgets(line, LINE_MAX, stdin) != NULL) {
        command = strtok(line," ");

        while(command != NULL) {
            printf("%s", command);
        }

    }

Answer 1

Here you go:

instead of .split http://www.cplusplus.com/reference/clibrary/cstring/strtok/

instead of .equals http://www.cplusplus.com/reference/clibrary/cstring/strcmp/

instead of .nextLine() http://www.cplusplus.com/reference/clibrary/cstdio/fgets/

Answer 2

Look at the documentation of fgets() (for replacing hasNextLine() and nextLine()) and strtok() (for replacing split()).

Edit: here is my edit on your try:

while (fgets(line, LINE_MAX, stdin) != NULL) {
    command = strtok(line, " ");

    if (command != NULL) {
        char *argument;

        printf("command = %s\n", command);
        while ((argument = strtok(NULL, " \n")) != NULL) {
            printf("\targument = %s\n", argument);
        }
    }
}