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In the C ++ programming language, some judgment statements exist, such as the if and C ++ switch-case statements. In this article, we will introduce the basic usage of the C ++ switch-case statement in detail, hoping to help you.
Detailed
Switch-case retrun break, switch-caseretrun
{
If statements process two branches, the if-else-if structure must be used when processing multiple branches. However, if there are many branches, the more nested if statement layers, the program is not
Grammarsyntax for switch statements in the Swift language:
Copy Code code as follows:
Switch Expression {
Case expression1:
Statement (s)
Fallthrough/* Optional *
Case Expression2, Expression3:
Statement (s)
Fallthrough/*
The Switch...case statement in Swift can determine the object type, and the objective-c must be an integer.Can not penetrate, can not write break,
var rank = "A"
switch rank{case
"a"://equivalent to if
print ("excellent") Case
If statement
The IF statement can be used to form a branch structure that is judged according to the conditions given to determine which branch segment to execute.
There are three basic forms of if statements in C language
The first form of:
Asp tutorial. net switch statement usage (C, C #)A switch statement is a control statement that processes multiple choices and enumerations by passing a case statement to the body.Int caseSwitch = 1;Switch (caseSwitch){Case 1:Console. WriteLine
1. Expression: The expression is judged to have no result (value), the simplest expression is a constant or variable, such as: A, A, 3 + 1, a + B, a + 5 are expressions2.BOOL (Boolean) data type: In addition to the basic data types in the C language,
The If statement handles two branches and uses the IF-ELSE-IF structure when dealing with multiple branches, but if there are more branches, the more nested IF statements layer, The procedure is not only large but also difficult to understand. Deep
C languageThe use of macros (macro) in macro C (and C + +) belongs to the scope of compiler preprocessing, which is a compile-time concept (not a run-time concept). The following is a simple summary of the use of macros encountered. About # and #
A program is a set of instructions that a computer can recognize and execute. Each instruction enables the computer to perform a specific operation. A specific sequence of instructions used to accomplish certain functions. The essence of the
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