Brijesh1in's blog

why still scanf ??
By Brijesh1in, history, 6 years ago, In English

I have seen that mostly great programmers use scanf in C++ while they can use cin with ios::sync_with_stdio(false); cin.tie(NULL); I want to know why??

Sorry because I don't know how to put things into a block .... Thanks in advance .....

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6 years ago, # |
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People use scanf because when the amount of test case are small the speed of scanf is still faster, but when the amount exceeds 1e7 cin overtakes scanf

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    6 years ago, # ^ |
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    cin is faster than scanf for large inputs? I did not know about that, can you provide some reference for that?

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6 years ago, # |
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scanf / printf more powerful than cin / cout because it use regular expressions.

Examples

UPD: u can easy use scanf / printf in this problem, my solution with scanf, printf, sprintf

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    6 years ago, # ^ |
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    A lot of what you mentioned can also be done with cin/cout, but sometimes it's a bit harder.

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6 years ago, # |
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when you use sync_with_stdio you can no longer use some convenient and fast ways of input / output

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