错误信息 [error] case label not within a switch statement 表明在你的代码中,存在一个case标签,但它没有正确地位于一个switch语句内部。这通常意味着case标签被错误地放置在了switch语句的外部,或者其所在的switch语句因为某种原因(如语法错误)被编译器忽略了。 2. 检查代码中是否有switch语句 首先,你需要检查你的
prog.c: In function ‘main’: prog.c:9:6: error: case label not within a switch statement case 1: ^~~~ prog.c:11:10: error: break statement not within loop or switch break; ^~~~ prog.c:12:6: error: case label not within a switch statement case 2: ^~~~ prog.c:14:10: ...
Run Code Online (Sandbox Code Playgroud) 当我用 gcc 编译这段代码时,我得到了错误root@ubuntu:/home/ubuntu# gcc test.c -o t test.c: In function ‘main’: test.c:9:4: error: a label can only be part of a statement and a declaration is not a statement int res = 1; Run Code O...
考虑下，是不是case的值和你的switch括号里的变量永远不可能相等。有可能是switch（）这里面的判断条件的类型不符合规定能不能把程序贴一下？最好连问题一起贴出来。
error: case label not within a switch statement The error is located here at the 28th line. Help! Feb 24, 2013 at 9:41pm closed account (zb0S216C) Cases need to be enclosed in a set of braces, like so: 1 2 3 4 5 switch( ... ) {case:// ...} ...
#include<iostream>usingstd::cout;usingstd::cin;intmain(){intopt=2;switch(opt){case1:{intt=10;break;}case2:{intt=20;break;}case3:{intt=30;break;}}} reference https://stackoverflow.com/questions/5685471/error-jump-to-case-label-in-switch-statement ...
In October 2021, Python 3.10 changed everything. They added the match-case statement. It looks much cleaner. It’s easier to understand. And it does much more than a simple switch statement. Basic Match-Case Example Here’s how the new way looks: def check_day(day): match day: case ...
这段代码为什么会出现这样的问题 error: case label `15' not within a switch statement 错误提示:error: case label `15' not within a switch statement(说的是case WM_PAINT:) error: break statement not within loop or switch代码:case WM_PAINT: HDC hDC; PAINT
break is optional here, we must use if we want to break the execution of switch statement, if break is not found after the block (statements written in that particular block), it will execute the statement of next case.If any of the case values does not match with the variable, default...
switch case statement 与if语句类似,switch...case通过允许程序员指定应在各种条件下执行的不同代码来控制程序流。 特别是,switch语句将变量的值与case语句中指定的值进行比较。 当找到一个case语句,其值与变量的值匹配时,将运行该case语句中的代码。 break关键字使switch语句退出,通常在每个case的末尾使用。 如果...