How we can show output without using cout in c++?

Question

I'm new for sololearn. plz help me.

Answer 1

You can use printf function.

http://www.cplusplus.com/reference/cstdio/printf/

You will need to include <cstdio> header.

NOTE: if you are printing value of std::string instead of C-String (char array) you will have to use the value from <string object>.data(), or <string object>.c_str().

Example:

#include <string>
#include <cstdio>

int main()
{
std::string sol {"SoloLearn"};
const char *com {"Community"};
int year {2018};

printf("%s %s %d", sol.c_str(), com, year);
return 0;
}

Hth, cmiiw

Answer 2

Assuming the intent of the question is "write something to screen", then along with Ipang 's explanation which has some C flavor, there are two other ostream objects which are tied to standard error stream (stderr) -- which is a different stream than stdout -- and somehow capable of handling the output-to-screen needs and we can abuse them shamelessly!

1. std::cerr
Usually writes to the same device as the standard output -- Same as std::cout. By default, writings to std::cerr are not buffered -- which means it's slower than std::cout -- and for the most part "used for error message or other output that is not part of the normal logic of the program".

2. std::clog
More like std::cout -- which means the stream is buffered -- and as the name suggests, is used to report program's information to a log file or screen.

Answer 3

Şerban Daniela-Mihaela LOL!

NOTHING!
NOTHING!
NOTHING!

I guess I've been encountered this question for 1,001 times, here!
It gets implicitly defined for you. So don't worry about it anymore, OK?! ;)

Answer 4

thanks for your valuable answer

Answer 5

You're very welcome : )

Answer 6

Hi. Somebody can tell me what happens if i don't use the return 0? I tried and is the same result. Many thanks. :)

Answer 7

Printf

Answer 8

You may use
printf ("example");