2. Call the min method should be min(a, b, c); So your void min(int, int, int) should be deleted.
3.void min () should be defined before the main () method. If it is C# and Java, it can be defined like this.
4. The input method should be written separately, and one number should be input in one line.
5. Delete the asterisk before all variables. Are you plastic, not a rope?