Create a structure, called track to hold the following information

• Title of a track (up to 20 characters)

• Artist Name (up to 30 characters)

• Duration (up to 1000 seconds)

Show how you would create a track called music and set its duration to 240 seconds.

You see the line:

mptr->duration = 100 ;

What does this mean?

struct track
{
    char title[21];
    /* the extra 1 is for the terminator */
    char artist[31];
    int duration;
}

struct track music;
music.duration = 240;

It means that mptr must be a pointer to a track structure, and that you are setting the duration of the track mptr points to to 100.