some problem

[progmateur]

1.what is the use of auto,union and enum

(please provide example for union and enum in c)

2.what happens if default statement is written at the begining of switch statement.

3.write in array format 'int *a[23];'

4.what is the choice of data structure if some name and marks of students are to be inputed and the name will be displayed accorsing to marks.

<string int>

[jimblumberg]

What are your answers? You give your best shot at answering the questions and then we can tell you if you have the correct answers.