Switch case
- switch / case
Same with if statement, switch…case controls the process of the program through the code the programmer set to be executed under different conditions. Specially, switch statement makes a comparison between the value of the variables and the one set in case statement. When the setting value in case statement is same with the value of the variable, this case statement will be executed.
Keyword break can be sued to exit a switch statement. Each case statement usually ends in break. If there is no break statement, switch statement will execute the following statements continually（all the way down）until meets a break or the end of the switch statement.
- Example
switch (var) {
case 1:
//execute some statements when the var is equal to 1
break;
case 2
//execute some statements when the var is equal to 2
break;
default:
//if there is no match, execute the default
//default is not essential
}
- Syntax
switch (var) {
case label:
//declaration
break;
case label:
// declaration
break;
default:
// declaration
}
Parameters var: variable used to be compared with the label in the following case
label: value used to be compared with the variable
