querySyntax << "select device_code from User_profilehandshake"; not working and PQresultStatus return data with int 7

Does anyone have coding blocks' algo++ and competitive programming course?

it's in <iostream>, not <iostream.h>

They both work 👍

There's no iostream.h in C++. It's only in your compiler.

Because they have updated it

Guy they are both correct If you started learning c++ Back in the early 1900s you will understand what am saying

Ok, if it's correct, please tell me what C++ Standard paragraph describes it

I don't get

What don't you get?

iostream.h is deprecated—it is the original Stroustrup version. iostream is the version from the standards committee. Generally, compilers point them both to the same thing, but some older compilers won't have the older one. In some odd cases, they will both exist and be different (to support legacy code) and you then must be specific.

C++ Standard paragraphs What does it mean 😳

We live in 2021. No one uses Stroustrup's C++. There have been 6 C++ Standard's versions and 7th is in its way

Because they have updated it

Using features that aren't in the standard is considered bad practice

👍 finally I am learning c++ with old books My bad😄😅

Just pick a compiler and start working on it😂👍

Yes. I remember using iostream.h back when I were in 6th div Now, iostream is generally used undoubtedly

Just pick a compiler and start working on it😂👍

#cppbookguide

There so many compiler variations out there , its common for people to get confused

There are around 4 c++ major compilers (gcc, clang, icc, msvc) You would need to spend hundreds of millions to make an optimized c++20 compiler

There are around 4 c++ major compilers (gcc, clang, icc, msvc) You would need to spend hundreds of millions to make an optimized c++20 compiler

Intel's compiler?

Why would anyone use Intel Compiler? Just give one valid reason, please.

In the past I heard that it is "the fastest compiler", I mean that it generates the most efficient code. Not sure how much it was true even then.

In the past I heard that it is "the fastest compiler", I mean that it generates the most efficient code. Not sure how much it was true even then.

I'm not really in the know about C compilers, but I'd think GCC, being around for so long and having such a wide community maintaining it, would be the fastest, no?

Oh, by the way. Do you know the name of a tool for benchmarking changes that reduce effect of memory layout to the results? I remember a presentation where the authors were talking about effects of memory layout to benchmarking and about this tool, but now can't remember the name of it or find the presentation.

Are you talking about this talk https://youtu.be/r-TLSBdHe1A?

Yes, this is the one, thanks! :)

This is the profiler they talk about in the talk. I've never tried it so don't know how effective it is https://github.com/plasma-umass/coz

Hello guys, is there anyway cin can extract input into enum type variables?

https://www.daniweb.com/programming/software-development/threads/22861/c-help-with-enum-and-cin/amp

Another not so long method

cin and enums did not change since this answers . You still need to cast from int to your enum. What's long in this method? You can cast manually every time.

Why would anyone use Intel Compiler? Just give one valid reason, please.

#include <stdio.h> #include <stdlib.h> int main() { int counter = 1 ; int number ; printf("enter a number\n"); scanf("%d",&number); while(counter<=2){ if(number==0){ break;} if (number ==100){ continue; } else{ printf("the number is %d ",number);} printf("\n enter a number\n"); scanf("%d",&number); counter++; } }

😂😂 hey @unterumarmung Look at is preprocessor directive 👌

iostream.h is not

Now it is

😂😂 hey @unterumarmung Look at is preprocessor directive 👌

Why would it be?😂