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I have read three ways to print things to the console in c++ from various sources.
using namespace std; and then using cout (CodeBlocks Standard)std::cout and std::endl; (C++ Primer)printf (HackerRank)Which is preferred and why?
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A modern console consists of the keyboard and a window on a computer screen. cin (console in), cout (console out), and cerr (console error) are stream objects that become part of every C++ program. The console objects channel streams of bytes to and from running programs.
To print a String to console output, you can use System. out. print() or System.
The printf function formats and prints a series of characters and values to the standard output stream, stdout .
Number 2 with amendment. (std::cout and '\n')
Why?
using namespace std. Source
cout is typesafe and printf is not. Source
std::endl will force a flush of the output buffer to the console. Unless you specifically want this to happen use << '\n' or << "...string\n". Source
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