switch statement (C language) - C 中文开发手册 根据整数参数的值执行代码。用于需要根据整数值执行许多代码分支中的一个或多个分支的情况。 句法 开关(表达式)语句 表达-整数类型的任何表达式(char,signed或unsigned integer或枚举) 声明 - 任何陈述(通常是复合陈述)。情况:和默认值:标签允许在声明中,...
新版?大括号的作用是让若干个statement(语句)形成一个block(语句块),大括号和case语句有什么直接关系? GTA小鸡 吧主 14 大括号表示一个作用域。大括号在switch中的常见使用场景是,case标签后不能定义变量,因此要用大括号形成一个单独作用域。这样写不能编译这样写才可以 收起回复 4楼 2023-10-15 23:20 ...
static_assert statement (C11) switch statement (C) try-except statement (C) try-finally statement (C) while statement (C) Functions (C) C language syntax summary Implementation-defined behavior C/C++ preprocessor reference C runtime library (CRT) reference ...
switch(1) { case 1 : puts("1"); // prints "1" break; // and exits the switch case 2 : puts("2"); break; } 与所有其他选择和迭代语句一样,switch语句建立块范围:表达式中引入的任何标识符在语句后超出范围。如果一个VLA或其他具有不同修改类型的标识符在其范围内有一个case或者default标签,则...
The switch and case statements help control complex conditional and branching operations. The switch statement transfers control to a statement within its body. Syntax selection-statement: switch ( expression ) statement labeled-statement: case constant-expression : statement default : ...
This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Switch Statement”.Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.1. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)...
C checks the expression with each label value, and executes the block in front of the first match. Each case block has a break as the last statement. The break statement takes the control out of the scope of the switch construct.
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 ...
Error: case label not within a switch statement Theerror: case label not within a switch statementoccurs in C language with switch case statement, whenswitch (variable/value)statement is terminated by the semicolon (;). Example #include<stdio.h>intmain(void){intchoice=2;switch(choice);{case...
深入瞭解 Microsoft.CodeAnalysis.CSharp.Syntax 命名空間中的 Microsoft.CodeAnalysis.CSharp.Syntax.SwitchStatementSyntax.Accept。