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Rogue goto statements in C language

2022-07-23 11:19:00 【rookieﻬ°】

goto The rogue and wonderful use of sentences ：


C The language offers something that can be abused goto Statements and symbols that mark jumps , In theory, goto Statements are not necessary , In practice, there is no goto Statements are also easy to write code .
But in some cases goto The sentence is still used , And it's easy to use , The most common usage is to terminate the structure processing process used by some deep nesting . Such as ： Jump out of multiple cycles at one time （break You can only jump out of the loop once ）. 

for(...)
	for(...)
		for(...)
			{
    
				if(A)
				 	goto  B;
			}
B:
	if(C)
		// Deal with

From this point of view , At this time goto The use of statements avoids multiple pairs of break Reuse of , Save time .

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