In C,switchStatements are used to execute different blocks based on different situations. Usually,caseKeywords are followed by a constant or expression that represents a specific value to match. However, the C language standard is not directly supported incaseSpecify the range later. To achieve similar functionality, you need to use more than onecasestatements or in combination with other logic.
Here's a simple example of how to use multiplecasestatement to simulate range matching:
c**。
In the example above, we used multiplecasestatement to match the numbers 1 to 5. WhennumWhen the value is in the range of 1 to 5, the corresponding is executedcaseStatement. IfnumIf the value is not within this range, it will be executeddefaultStatement.
If you want to match a range instead of a single value, you can use twocasestatement to represent the boundaries of the range, and use one in betweendefaultstatement to handle intermediate values. For example, the following ** will match the numbers 2 to 4:
c**。
In the example above, when:numWhen the value is in the range of 2 to 4, an intermediate one is executedcaseStatement. IfnumIf the value is not within this range, it will be executeddefaultStatement. It is important to note that this method is not very elegant, as it uses more than onecasestatement to represent a range. If you need to use range matching frequently, you may want to consider using other data structures and algorithms for more flexible and efficient processing.