if (expression) statement1 else if (expression) statement2 else if (expression) statement3 else if (expression) statement4 else statement5//处理一些意外情况,错误检验,可以省略不写。 3.2、Switch 类似于else-if选择语句,区别在于选择条件表达的取值不同 语法表示如下: switch (expression) //表达式必须返回...
Switch Statement in C - Learn how to use the switch statement in C programming. Discover its syntax, benefits, and examples for effective coding.
nocasematch is found, none of the statements in theswitchbody get executed. There can be at most onedefaultstatement. Thedefaultstatement doesn't have to come at the end. It may appear anywhere in the body of theswitchstatement. Acaseordefaultlabel can only appear inside aswitchstatement. ...
statements executed if expression does not equalany case constant-expression}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 ...
if (a) { int32_t c, d; /* OK, c and d are in if-statement scope */ c = foo(); int32_t e; /* Wrong, there was already executable statement inside block */ } 用星号声明指针变量与类型对齐 /* OK */ char* a; /* Wrong */ ...
Why didn’t I use break statement after default? The control would itself come out of the switch after default so I didn’t use it, however if you want to use the break after default then you can use it, there is no harm in doing that. ...
C If else statement Syntax of if else statement: If condition returns true then the statements inside the body of “if” are executed and the statements inside body of “else” are skipped. If condition returns false then the statements inside the body of “if” are skipped and the statemen...
If we do not use thebreakstatement, all statements after the matching label are also executed. Thedefaultclause inside theswitchstatement is optional. switch Statement Flowchart switch Statement Flowchart Example: Simple Calculator // Program to create a simple calculator#include<stdio.h>intmain(){ch...
There are some restrictions on the use of these switch cases. First of all, the switch expression is required to have the data type char or integer. The value of each case should be used inside of the switch case statement and its data type must be an integer or const char (constant ...
switch(dcheck→type){caseSVC_TELNET:service ="telnet";break;caseSVC_ICMPPING:break;default:returnFAIL;} There should be no empty line beforebreakin aswitchstatement, even in largercaseblocks: switch(value_type){caseITEM_VALUE_TYPE_FLOAT:numeric =1;break;caseITEM_VALUE_TYPE_STR:if(NULL == ...