c$++,$ how can i use void function to write below program, thanks.

for example:

$1,$Void welcome function

$2,$Void readInput$($char courseNums$[][$MAXCHAR$],$ int students$[],$ int &count

$3,$void readInt$($string prompt, int &num$)$

$4.$void printList$($char courseNums$[][$MAXCHAR$],$ int students$[],$ int count$)$

$5,$ void cancelCourses$($char courseNums$[][$MAXCHAR$],$ int students$[],$ int &count$)$

$***$

Welcome to my Course Rosters program!!

Enter course number and students enrolled when prompted. Enter Quit or quit for course number when you are done.

Enter course number: CS$133$G

Number of students enrolled: $7$

Enter course number: CS$160\_1$

Number of students enrolled: $15$

Enter course number: CS$161$A$\_1$

Number of students enrolled: $21$

Enter course number: CS$161$B

Number of students enrolled: $23$

Enter course number: CS$162$

Number of students enrolled: $30$

Invalid number!! Please enter a number between $0$ and $25$

Number of students enrolled: $25$

Enter course number: CS$260$

Number of students enrolled: $5$

Enter course number: CS$160\_2$

Number of students enrolled: $7$

Enter course number: CS$161$A$\_2$

Number of students enrolled: $25$

Enter course number: quit

List of courses and students:

CS$133$G$7$

CS$160\_115$

CS$160\_27$

CS$161$A$\_121$

CS$161$A$\_225$

CS$161$B$23$

CS$16225$

CS$2605$

List after cancellations:

CS$160\_115$

CS$161$A$\_121$

CS$161$A$\_225$

CS$161$B$23$

CS$16225$

Thank you for checking out my Course Rosters program!