If void is a data type

lmao

Explain in English plz

Why we cant return struct type in main in c language?

When returning from main, who gets the value?

I think operating system

So ... ask the os if it wants a struct 😂

So ... ask the os if it wants a struct 😂

you guys, better read some books with basic stuff

you guys, better read some books with basic stuff

you can believe or not, you better have some basic knowledge

When returning from main, who gets the value?

What if return 1 instead of 0 in GCC compilers?

You mean GCC compiler returns 1 or some programs compiled by GCC return 1? Which one do you mean?

First

Well... It means GCC find something error, and it cannot repair it automatically fix it. In terms of what kind of the error is... hmmm... You'll have to read the specification of GCC.

Int main() { return 1; }

Int main() { return 1; }

Are you really an admin?

This is the second case, in my opinion. The meaning of program return value depends on the specification or convention of the program. It's author defined.

That just returns 1 at exit. Under unix based OS you can read the return code with echo $?

Good question! However, to answer this question, you'll have to know how does OS load a program image from disk to memory, and how does OS transfer control stream from OS kernel to user process. You'll also have to master many other knowledge. (try to read the book "Linkers and Loaders") Brief answer to your question: In C, the main function returns its return-value to C-runtime library, which will then pass to OS kernel.

Echo $ means?

1) no using namespace std since it renders the namespacing obvious, might conflict with adl, might make another lib conflict with the stl etc etc etc 2) no stdio.h no stdlib. no time.h, they are not defined by the C++ standard. use cstdio, cstdlib and ctime 3) no printf in C++, its just not up to date 4) no mixing between printf and cout (wtf?) I understand that this is just an example code, but we don't want beginners to learn bad habits, do we? xD

1) You cannot write namespace, if not important. 2) He ask me that I write code which will compile with C language, .h - it's C. 3) Also C language. C don't have cin and cout. 4) Again example. This is different between C and C++. I wrote the comment which show how can he write, if he want

1) You cannot write namespace, if not important. 2) He ask me that I write code which will compile with C language, .h - it's C. 3) Also C language. C don't have cin and cout. 4) Again example. This is different between C and C++. I wrote the comment which show how can he write, if he want

1) You cannot write namespace, if not important. 2) He ask me that I write code which will compile with C language, .h - it's C. 3) Also C language. C don't have cin and cout. 4) Again example. This is different between C and C++. I wrote the comment which show how can he write, if he want

Google why you shouldn't use using namespace

No-no, I think people are not so stupid. They understand difference between cout and printf🙂

#include <iostream> #include <stdio.h> #include <stdlib.h> #include <time.h> using namespace std; int main() { string date; struct tm *tim; time_t tt = time(NULL); tim = localtime(&tt); int theDay = tim->tm_mday; int theMonth = tim->tm_mon; int theYear = tim->tm_year+1900; printf ("%d.%d.%d",theYear,theMonth,theDay); // Here possible to write like this: std::cout << theYear << "." << theMonth << "." << theDay; cout << endl; cout << "Enter a date, please: "; cin >> date; cout << endl; if (date == "22/12/1999") cout << "Happy Birthday, cryptpi!" << endl; // There you can write something else, what you want. return 0; }

No-no, I think people are not so stupid. They understand difference between cout and printf🙂

Ok, thanks for your suggestion. I'll take your note into account.

I DO sound very rude at times

Oh no, why do you think so? It's just conversation

using namespace std; is not

impo?

integrating my precious operation?