使用goto语句在 C 语言中实现循环 goto关键字是 C 语言的一部分,它提供了一个做无条件跳转的结构。if和switch语句是条件跳转的例子。goto构造由两部分组成:goto调用和标签名。代码中的任何语句都可以在前面加一个标签,标签只是一个标识符,后面加一个冒号。goto调用强制代码执行跳转到标签后的第一条语句。goto只能跳...
C实现 // C program to check if a number is // even or not using goto statement #include <stdio.h> // function to check even or not void checkEvenOrNot(int num) { if (num % 2 == 0) // jump to even goto even; else // jump to odd goto odd; even: printf("%d is even...
[root@localhost c-c++]# g++ goto_study.cpp goto_study.cpp: In function 'int main()': goto_study.cpp:31: error: jump to label 'Exit' goto_study.cpp:29: error: from here goto_study.cpp:30: error: crosses initialization of 'int a' 正确写法 也不能说是正确的写法,只能说是编译OK的写...
Any statement in code can be preceded by a label, which is just an identifier followed by a colon. goto call forces the code execution to jump to the first statement after the label. goto can only jump to the label inside the same function and labels are visible in the entire function ...
在Modern C,作者 Jens Gustedt 總結 3 項和 goto 有關的規範: Rule 2.15.0.1: Labels for goto are visible in the whole function that contains them. Rule 2.15.0.2: goto can only jump to a label inside the same function. Rule 2.15.0.3: goto should not jump over variable initializations. 和...
goto语句是C语言中提供的,在任何地方都可以用的。 1.作用 跳转作用:goto语句与标记跳转的标号——again相搭配使用。 如图所示,again是跳转的位置; goto是跳转到again那里去; 2.说明 ·其实有时候你会觉得goto语句挺好用的,但是从理论上goto语句是没有必要的,实践中没有goto语句也能写出完整代码,而且,如上图所示...
示例1: _mongoc_client_recv_gle ▲点赞 9▼ bool_mongoc_client_recv_gle (mongoc_client_t*client,uint32_tserver_id,bson_t**gle_doc,bson_error_t*error) {mongoc_buffer_tbuffer;mongoc_rpc_trpc;bson_iter_titer;boolret =false;bson_tb; ...
4 from module import *:import module中的所有function 假如import两个module有名字相同的函数,那么可以直接用第一种方法区分。用法是module1.function()和module2.function() 也可以通过as为整个模块或者函数提供别名: 1.为模块提供别名 2.为函数提供别名 ...
The JetGotoPosition function moves a cursor to a new location that is a fraction of the way through the current index. The fraction is approximately equal to the following:precpos->centriesLT/precpos->centriesTotalThis operation is performed in response to user scroll box input that is ...
For example, rather than using a goto to jump to a specific line of code, it is recommended to encapsulate related code within a function and call that function when needed. This approach improves code readability and maintainability. 在C和C++中,推荐使用函数、循环和条件语句来维持代码的清晰性,...