Which one is better in cpp compiler?

Question

cin and cout OR scanf and printf?

Which one is better and why?

Answer 1

Ashfaq Reshad in competitive programming cin and cout is almost 5 times slower than printf() and scanf() but you can still use cin/cout and achieve the same speed as scanf/printf by including the following two lines in your main() function👇

ios_base::sync_with_stdio(false);
cin.tie(NULL);

Learn more about it here👇
https://www.geeksforgeeks.org/fast-io-for-competitive-programming/amp/

Answer 2

Ninja Coder
Arsenic
Thank you both <3

Answer 3

You shouldn't use scanf() over cin if you are writing C++ software because that is want cin is for. If you want performance, you probably wouldn't be writing I/O in C++ anyway. The statements cin and cout in general use seem to be slower than scanf and printf in C++, but actually they are FASTER!

Answer 4

As I know cin and cout is for C++, rest are for C. These are standard.

Answer 5

Ninja Coder people says that cin & cout is slower than scanf & printf

Answer 6

Ninja Coder in terms of competitive programming which one is better?
If cin & cout is slow i may have to go with time limit exceeded problem...

Answer 7

Ashfaq Reshad Sorry, I have no answer for that. You should google it for the best answer