Which is better cout or printf?
I’m surprised that everyone on this question claims that std::cout is so much better than printf , even if the question only asks about the differences. Now, there’s a difference: std::cout is C++ and printf is C (you can use it in C++, though, just like anything else in C).
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Which is faster Scanf or CIN?
With sync disabled, the above results indicate that cin is 8-10% faster than scanf(). This is probably because scanf() interprets the format arguments at runtime and uses a variable number of arguments, while cin does so at compile time.
Which is a faster execution speed, cout or printf?
But again, cout does a lot more for you in terms of type safety. Also remember that printf is a simple function, while cout is an object based on a complex hierarchy of streams, so it’s not fair to compare execution times. I guess I agree with your dot cout does a lot more than print.
Which is better to use printf or Cout?
You can automatically use millions of lines of I/O code written by users you don’t even know, and they don’t need to know about your “extended stream” class. On the other hand, printf is significantly faster, which may justify its use instead of cout in very specific and limited cases.
Which is slower, Cin/Cout or scanf/printf?
Yes, apparently cin/cout is slower than scanf/printf (check the time taken stats at the end of this answer for the given problem on HackerEarth) This is an easy algorithmic question on HackerEarth. But the time limit can be exceeded even if you write an O(n) solution.
Which is faster Io Cout or printf C++?
So there is no general answer to this question. Performance is not an issue for comparison; I can’t think of anything where it really counts (developing a console program). However, there are a few points to note: Iostreams uses operator chaining instead of va_args.