321ee3e69d
* Changed the file to reflect standards `goto` is generally discouraged for use in C++, which wasn't what this was saying. Dijkstra even [said](http://www.u.arizona.edu/~rubinson/copyright_violations/Go_To_Considered_Harmful.html), "The go to statement as it stands is just too primitive; it is too much an invitation to make a mess of one's program." in 1968. This file seemed to indicate the opposite. * fix: fixed grammar
39 lines
1.2 KiB
Markdown
39 lines
1.2 KiB
Markdown
---
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title: goto
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---
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# Intro to the use of goto and labels
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goto is one of the most powerful pieces of logic in C/C++. Crazy amounts of optimization can be achieved using goto, provided it is used properly. **It is, however, discouraged for use in C++, since better ways of programming exist, and it [leads to spaghetti code](https://stackoverflow.com/questions/3517726/what-is-wrong-with-using-goto#3517746)**
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It does exactly what it is named as. It goes to the mentioned occurence of the next label, wherever may it be.
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# Terminology
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goto - The keyword used to go to the particular label.
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label - this can be named anything.
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# syntax
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`goto label; //This takes the program flow to the next appearance of label.`
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goto is something that transcends all loops. To be clearer on this point, here is an example.
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```
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#include <iostream>
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using std::cout;
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int main() {
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for(;;)
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{
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if(1)
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goto label;
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}
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label:
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cout << "lol"; //here, goto is used to get out of an otherwise infinite loop. That is one of the only places where goto is tolerated.
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return 0;
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}
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```
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[Try the code here!](https://wandbox.org/permlink/tG0aInbyuKJQC4ER)
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**However, care must be taken to use goto very carefully.**
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