The document presents information on C switch case statements including: - The switch statement allows choosing from multiple selections by passing control to one of the case statements based on the value of an expression. - The syntax includes a switch expression, cases with condition blocks ending in break, and an optional default block. - A flowchart illustrates the flow of a switch case statement. - Break statements end processing of a case and branch to the end, while default executes if no case matches and can appear anywhere.

1. Presentation on C Switch Case
Statements
Group Members:
Bipin Gurung
Dipesh Raj Pandey
Sushant Singh Bhandari

2. Introduction
• The C switch case statement allows you to
choose from many statements based on
multiple selections by passing control to one
of the case statements within its body. The
switch statement executes the case
corresponding to the value of the expression .
The switch statement can include any number
of case instances.

3. Syntax
switch(Character or Integer expression)
{
case condition 1:
Statement sequence(block 1);
break;
case condition 2:
Statement sequence(block 2);
break;
.
.
.
default:
Statement sequence(default block);
}

4. Flowchart of Switch Case Statement

5. Break and Default Statement
• You can use the break statement to end processing of a particular
case within the switch statement and to branch to the end of
the switch statement. Without break, the program continues to the
next case, executing the statements until a break or the end of the
statement is reached. In some situations, this continuation may be
desirable.
• The default statement is executed if no case constant-expression is
equal to the value of switch ( expression ). If the default statement
is omitted, and no case match is found, none of the statements in
the switch body are executed. There can be at most
one default statement. The default statement need not come at the
end; it can appear anywhere in the body of the switch statement.
A case or default label can only appear inside a switch statement.

6. Break and Default Statement
• The type of switch expression and case constant-
expression must be integral. The value of
each case constant-expression must be unique
within the statement body.
• The case and default labels of
the switch statement body are significant only in
the initial test that determines where execution
starts in the statement body. Switch statements
can be nested. Any static variables are initialized
before executing into any switch statements.