The switch statement allows us to execute one code block among many alternatives. You can do the same thing with theif...else..ifladder. However, the syntax of theswitchstatement is much easier to read and write. Syntax of switch...case switch(expression) {caseconstant1:// statementsb...
Syntax switch(expression) {caseconstant1:// code to be executed if// expression is equal to constant1;break;caseconstant2:// code to be executed if// expression is equal to constant2;break; . . .default:// code to be executed if// expression doesn't match any constant} ...
switch case语句与if elseif语句类似，都是从多个选择条件里选取一个来执行。 （一）先来看一个if el...
but# elif is generally just as good and more concise.# Empty suites are considered syntax errors, so intentional fall-throughs# should contain 'pass'c ='z'forcaseinswitch(c):ifcase('a'):pass# only necessary if the rest of the suite is emptyifcase('...
GCC中的switch case语句 标准C中,switch case语句中的case后面可以不用大括弧(如VC6),但是在GCC中,case后面如果定义了临时变量,就一定要使用大括弧,否则会报错。 在gcc-3.3.4中会报"syntax error before xxxx",这使得问题很难定位,错误信息不够明确,并且网络搜索很难定位关键字查找答案,在gcc-4.4.3中,报错...
Syntax switch switch_expression case case_expression statements case case_expression statements ... otherwise statements end Description switch switch_expression, case case_expression, end evaluates an expression and chooses to execute one of several groups of statements. Each choice is a case. The ...
" You can do this easily enough with a sequence of if... elif... elif... else. There have been some proposals for switch statement syntax, but there is no consensus (yet) on whether and how to do range tests. " 感觉有点low。
switch case otherwise 函数 这个函数是 Execute one of several groups of statements, the syntax is: switchswitch_expression casecase_expression statements casecase_expression statements ... otherwise statements end corresponding description is switchswitch_expression,...
在编程中,case表达式是一种条件语句,用于根据不同的条件执行不同的代码块。舍入是一种数学运算,用于将一个数值按照一定的规则进行近似取整。 在case表达式中的舍入,通常指的是在条件判断中对浮点数进...
但是在Python中,官方对switch case的需求是这样回复的: " You can do this easily enough with a sequence of if... elif... elif... else. There have been some proposals for switch statement syntax, but there is no consensus (yet) on whether and how to do range tests. " ...