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,...
switch (expression)statement labeled-statement: caseconstant-expression:statement default:statement Remarks Aswitchstatement causes control to transfer to onelabeled-statementin its statement body, depending on the value ofexpression. The values ofexpressionand eachconstant-expressionmust have an ...
One thing i do not like about the switch statement and break is the compiler warning from it if you are issuing a return in the case. The break gets flagged as unreachable code. Which yeah it is. But still to be consistant it should be there.For Exampleswitch (x) { case 1: ...
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...
Only total is incremented if c is not equal to 'A' or 'a'. 复制 switch( i ) { case -1: n++; break; case 0 : z++; break; case 1 : p++; break; } In this example, a break statement follows each statement of the switch body. The break statement forces an exit from ...
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,并打破...
//stackoverflow.com/questions/11479816/what-is-the-python-equivalent-for-a-case-switch-statement ...
Because transfer of control isnot permitted to enter the scopeof a variable, if a declaration statement is encountered inside thestatement, it has to be scoped in its own compound statement: switch(1){case1:intx=0;// initializationstd::cout<<x<<'\n';break;default:// compilation error: ...
The switch code block contains a list of switch sections, each of which includes one or more switch labels. In addition, each switch section includes a statement list that will execute if the label is equal to the switch expression defined at the top of the switch statement. The switch expr...
The preceding code uses a switch expression (not the same as a switch statement) that tests the declaration pattern. A switch expression begins with the variable, in the preceding code, followed by the keyword. Next comes all the switch arms inside curly braces. The expression makes other ...