Ethan13310 -Don't use 'printf' here, it's a C function. C++ is not C in any way. Use 'std::cout' instead.
-Never use 'using namespace std'. This directive has been added for compatibility purpose and can lead into multiple definitions in larger projects. It breaks the namespace principle. However, you can use it for literals (e.g. 'using namespace std::chrono_literals'). If you really don't want to use the 'std::' prefix, you can use 'using std::cout', 'using std::endl' and so on for each function, class, etc. you want to import in the global namespace.
#include <iostream> int main() { std::cout << "Hello, World!" << std::endl; return 0; }
And with 'using':
#include <iostream> using std::cout; using std::endl; int main() { cout << "Hello, World!" << endl; return 0; }
sommerlad_peter return 0; // is redundant in main()
using declaration should not put in global scope, but within main's body, where they are used.
raju_1997 fuckkk offf
kosarajuprasanna use new code baba!............
kosarajuprasanna this is difficult to find the code and submit button
vinay_aj95 why using std and end commands
pat_laugh You can use
using namespace std;in implementation files; it just shouldn't be used in header files.Ethan13310 No. That's a bad practice. Don't use it at all.
jooanchoi Why? Is that for readability?
b0kater For more detail regarding printf vs c++ iostream usage, please see this link: Stack Overflow - printf-vs-cout-in-c
nvduythong Do you know why we use the "endl" command. Because when I don't use it the compiler also accept my program.
kalesaur It tells the program to end the line. If I decide to print something else on the next line, "endl" tells the code that any other prints are printed on another line, instead of on the same line.
samplenhold Weirdest challenge. All I had to do was submit it with no change and it passed.... whatever.
jtockey8 The challenge was to find the submit button.
MariaAhmed hahah, yeah !
Nobbs66 Here's my implementation
int main() { int out[] = { 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x2C, 0x20, 0x57, 0x6F, 0x72, 0x6C, 0x64 }; for (int i = 0; i < 12; i++) { char put = static_cast<char>(out[i]); std::cout << put; } return 0; }
Lauman #include <iostream> using std::cout; template <typename T> T print(void){ return "Hello, World!"; } int main() { cout << print<const char *>(); return 0; }
jorgechiquinv Jaja so funny
kosarajuprasanna it is so funny bro..........
1604064_Sharif #include <iostream> using namespace std; int main() { cout<<"Hello, World!"; return 0;}
Why is it not working?
1604064_Sharif I am being given downvotes instead of explaining what's going on. So, the solution was like I had to change the language from C++ to C++14 or vice-versa. The problem was probably in the HackerRank editor.
sujairamprasathc You are mad man! Using templates for printing "Hello, World!"
1604064_Sharif Why would I be a madman by using template? If it works that way in my compiler, then it should also work here. And "using namespace std;" is a common statement for C++ beginners. So by your definition, you have to be a madman to start learning C++.
nithsece can any one help me how to express a code for press any key to continue in c++
illianadicroos If you are looking for simple c++ program then this page will provide you help. For more visit our site quickbooks support.
illianadicroos C++ is a very great coding application. Most of the programmer create their program. I explain for loops first you need a veriable then { for(i=1;i>10;i++) } (https://quickbooksupports.co/)
mranderson66 Can anyone give me a simple Explanation as to why Z became equal to A, the "11 11" without an increment operator postfix???
#include <iostream> using namespace std; int main() { int A = 10; int Z = 11; A = A; // 10 && 11 Z = Z; cout << "\nA ==" << A << endl; cout << "Z ==" << Z << endl; A = Z; // 11 && 10 Z = A; cout << "A ==" << A << endl; cout << "Z ==" << Z << endl; return 0; }
A ==10 Z ==11 ..... A ==11 Z ==11
yashasvip60 can anyone tell me ...exactaly need of using namespace std????
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