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Value of a is 100 and b is 200

Exact value of a is : 100

Exact value of b is : 200

switch Statement
A switch statement allows a variable to be tested for equality against a list of values. Each
value is called a case, and the variable being switched on is checked for each switch case.

Syntax
The syntax for a switch statement in C programming language is as follows:

switch(expression){
case constant-expression :

statement(s);
break; /* optional */

case constant-expression :
statement(s);

break; /* optional */

/* you can have any number of case statements */
default : /* Optional */

statement(s);
}

The following rules apply to a switch statement:
 The expression used in a switch statement must have an integral or
enumerated type, or be of a class type in which the class has a single conversion function to an
integral or enumerated type.
 You can have any number of case statements within a switch. Each case is
followed by the value to be compared to and a colon.
 The constant-expression for a case must be the same data type as the
variable in the switch, and it must be a constant or a literal.
 When the variable being switched on is equal to a case, the statements
following that case will execute until a break statement is reached.
 When a break statement is reached, the switch terminates, and the flow of
control jumps to the next line following the switch statement.

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