8.8. Conditional and unconditional transitions in the C language.

In C, the branch operator in general has the following entry:
if (expression)
operator;
The C language allows the use of the if else construct , which in general has the following entry:
if (expression)
operator 1;
else
operator 2;
C also allows the use of the else if construct . In this case, the user may incorrectly read the program.
Example:
if (expression 1)
if (expression 2)
operator 1;
else
operator 2;
C language uses a shorthand record of one of the forms of branching. This form is called a conditional expression and is written as a conditional operator ?:
In general, the conditional operator has two parts and three operands. You can record it in the following way:
(expression1)? expression2: expression3;

Example: it is required to determine the greatest of two values:
1 way:
if (a
max = b;
else
max = a;

2 way:
max = (a
To resolve a situation with a previously known number of outcomes in the C language, the choice construct is used. In general, the choice is written in the following form:
switch (expression)
{
case value1:
operator1;
case value2:
operator2;
default: operator3;
}
The choice in C allows a brief recording of those values ​​of the expression for which the same action is executed.
Example:
switch (expression)
{
case value1:
case value2:
operator1;
case value3:
operator2;
}
C can use the following unconditional jumps or interrupts: break , continue, and goto . Their use basically coincides with the use in Pascal, namely: break interrupts the execution of any kind of cycles, continue - completes the current iteration of the loop, goto - goes over the label. Unlike Pascal, break can be used in C to complete a selection. Using the goto statement in the C language is considered undesirable. Tags are not specifically announced.