meaning of return 0

The meaning of shell variable $#,[email protected],$0,$1,$2 in Linux is explained:Variable Description:$$The PID of the shell itself (ProcessID)$!PID of the Shell's last running background process$?End code of the last Run command (return

In JavaScript, Void is an operator that specifies that you want to evaluate an expression but not return a value. void operator usage format is as follows: 1. javascript:void (expression) 2. Javascript:void expression Expression is an expression

void (0) is used to perform certain processing, but does not refresh the page as a whole.Javascript:void (0) indicates that no action is done. Such as:This indicates that this link does not do a jump action, performing the onclick event.I'd like to

do{...} The meaning and usage of while (0)On October 9, +, in C language, language learning, by sponge The Linux kernel and some other open source code often encounter such code: do{... } while (0) This code is not a loop at a glance, do. While the

The Linux kernel and some other open source code often encounter such code:Do{...} while (0)This code is not a loop at a glance, do. While the surface is meaningless here, why use it so much? In fact, do{...} while (0) is much more useful than

The Linux kernel and some other open source code often encounter such code: Do { ...} while (0)This code is not a loop at a glance, do. While the surface is meaningless here, why use it so much?In fact, do{...} while (0) is much more useful than

Well, some compiler initialization will produce such parameters.ARGC is the total number of arguments for the command line, argv[] is a argc parameter, where the No. 0 parameter is the full name of the program1. Several common types of C + +

The Linux kernel and some other Open-source code often encounter code like this: do{...}while (0)Such code is not a loop, do ... While on the surface there is no meaning here, then why use it? In fact, do{...} while (0) is much more useful than

Excerpt from: Abs_guide: http://www.tldp.org/LDP/abs/abs-guide.pdf the meaning of shell variable $#,[email protected],$0,$1,$2 in Linux is explained:Variable Description:$$ the PID of the shell itself (ProcessID)$! PID of the Shell's

Excerpt from: Abs_guide: http://www.tldp.org/LDP/abs/abs-guide.pdf The meaning of shell variable $#,[email protected],$0,$1,$2 in Linux is explained:Variable Description:$$The PID of the shell itself (ProcessID)$!PID of the Shell's