C Language Programming - The HCS12/9S12: An Introduction to Software and Hardware Interfacing - page 213

5.4.4 Switch Statement
The switch statement is a multiway decision based on the value of a control expression.
The syntax of the switch statement is
switch ( expression ) {

case const_expr 1 :

statement 1 ;

break;

case const_expr 2 :

statement 2 ;

break;

. . .

default:

statement n ;

}
As an example, consider the following program fragment:
switch (i) {

case 1:

pay 5 100;

break;

case 2:

pay 5 200;

break;

case 3:

pay 5 300;

break;

case 4:

pay 5 400;

break;

case 5:

pay 5 500;

break;

default:

pay 5 0;

}
The variable pay receives a value that is equal to the value of i 3 100 . The keyword break forces
the program flow to drop out of the switch statement so that only the statements under the cor-
responding case-label are executed. If any break statement is missing, then all the statements from
that case-label until the next break statement within the same switch statement will be executed.

5.4.5 For-Loop Statement
The syntax of a for-loop statement is
for (expr1; expr2; expr3)
statement;
where expr1 and expr3 are assignments or function calls, and expr2 is a relational expression.
For example, the following for loop computes the sum of the squares of integers from 1 to 9:
sum 5 0;
for (i 5 1; i , 10; i 11 )

sum 5 sum 1 i * i;