此话意思是 ：返回表达式在空白函数 return 那里出错了
void 表示这个子函数没有返回值 可以子函数最后 return TempDat 所以报错
void表示无返回值的函数 你的 void read_add(uchar address)void read_byte()都带有返回值 所以报错了 你的返回值是uchar类型的 所以 函数名应该写成 uchar read_byte()uchar read_add(uchar address)
JavaScriptVoidfunction return value is used as the return type of function that does not return any value. Thevoidoperator is often used for obtaining theundefinedprimitive value. void expression Void function return value is used in JavaScript A simple example code describes the returning undefined ...
200px" v-on:click="onSubmit('loginForm')">登录</el-button> </el-form-item> </el-form> const Main = { data() { return { form: { username: '', password: '' }, rules: { /* * 规则名:username * 校验规则:required(文本是否留空) * 提示信息:message * 触发条件:trigger: 'blu...
a'main' : function should return a value; 'void' return type assumed f:\c printed lecture \ c procedure \ video31 \ 1.cpp( 9) : warning C4508: 'main': function should return a value; 'void' return type assumed[translate]
return所在函数定义了void类型，所以无法返回值。
First, your function has to indicate what type of value will be returned. This is done by setting the function’sreturn type, which is the type that is defined before the function’s name. In the example above, functiongetValueFromUserhas a return type ofvoid(meaning no value will be re...
public function voidMethod(): void { return $this->getScenario()->runStep(new \Codeception\Step\Action('voidMethod', func_get_args())); }This causes PHP errors:Fatal error: A void function must not return a value DetailsCodeception version: 4.1.2 PHP Version: 7.3.15 Operating System: ...
[C++] - GCC和LLVM对方法 warning: non-void function does not return a value [-Wreturn-type] 的处理差异 最近做一个C++开源项目发现一个奇怪问题,通过clang编译链接执行程序每到有一个就崩溃了,gcc下则没有此问题。 后来通过调试,发现原因是bool返回的方法是没有return语句!问题是为啥还能通过编译呢?