IIT Bombay, India?

yup

yup

Is it worth to get a certificate from online courses ?

Is it worth to get a certificate from online courses ?

It's better than nothing

Hi guys. Please help me. Can not add a boost library to CMakeList.txt file. :)

i got error: Boost can not find components (ex: regex);

Hi guys. Please help me. Can not add a boost library to CMakeList.txt file. :)

oh man,... there can be SO many different errors, depending whether its linux, mac, or win, which style of cmake you are using which compiler you are using how you installed your boost libs (pre-compiled or self-compiled) You should post info about OS pre- or self-comp and the complete Cmake file as well as the error message and furthermore, this looks like a question you should put on stackoverflow and post the link here, since its going to be a longer discussion

oh man,... there can be SO many different errors, depending whether its linux, mac, or win, which style of cmake you are using which compiler you are using how you installed your boost libs (pre-compiled or self-compiled) You should post info about OS pre- or self-comp and the complete Cmake file as well as the error message and furthermore, this looks like a question you should put on stackoverflow and post the link here, since its going to be a longer discussion

Solution on Stackoverflow not suit me... I compiled by B2 tool and gcc compiler. Main dir of boost here: c:/boost (include and libs) I added this dir to enviroment variable but I think what is not required. I can show you my cmakelists file and maybe you know what is my problem.

oh man,... there can be SO many different errors, depending whether its linux, mac, or win, which style of cmake you are using which compiler you are using how you installed your boost libs (pre-compiled or self-compiled) You should post info about OS pre- or self-comp and the complete Cmake file as well as the error message and furthermore, this looks like a question you should put on stackoverflow and post the link here, since its going to be a longer discussion

you installed to c:/boost and you point to Boost?

and... please make sure, not to add a couple of lines at once. try commenting out all lines except for find_package

and please write all CMAKE in all CAPS. it makes it easier to read

find_package has also to be before setting the boost_root if i am not mistaken, since find_package initializes the modul for finding packages

https://github.com/Kitware/CMake/blob/master/Modules/FindBoost.cmake Here is the docs:

aaaand, I don't quite know whether it makes a difference, but in my cmake i usually use FIND_PACKAGE(Boost 1.69 COMPONENTS system REQUIRED) but i don't know if it depends from the order

you installed to c:/boost and you point to Boost?

my boost compiler lib and include in C:/Boost

oky

but try using "FIND_PACKAGE" befor setting dirs

and please write all CMAKE in all CAPS. it makes it easier to read

sorry, what you mean?

just a matter of style, no worries. most people tend to write all cmake commandes ALL UPPERCASE like FIND_PACKAGE

have you put find pack to the top now and tried again?

just a matter of style, no worries. most people tend to write all cmake commandes ALL UPPERCASE like FIND_PACKAGE

okey thank you

delete use static use multithr and use static runtime for the test please

btw the default of multithreaded is ON already, you don't have to turn it on

have you put find pack to the top now and tried again?

yes. and i got "Could NOT find Boost (missing: system) (found suitable version "1.69.0", minimum required is "1.69.0")"

could you please copy the whole cmake messages?

could you please copy the whole cmake messages?

C:/Users/Eric/projects/test2/build> mingw32-make -j2 CMake Error at C:/Program Files/CMake/share/cmake-3.15/Modules/FindPackageHandleStandardArgs.cmake:137 (message): Could NOT find Boost (missing: system) (found suitable version "1.69.0", minimum required is "1.69.0") Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE) C:/Program Files/CMake/share/cmake-3.15/Modules/FindBoost.cmake:2142 (find_package_handle_standard_args) CMakeLists.txt:8 (FIND_PACKAGE) -- Configuring incomplete, errors occurred! See also "C:/Users/Eric/projects/test2/build/CMakeFiles/CMakeOutput.log". mingw32-make: *** [Makefile:242: cmake_check_build_system] Error 1 *** Failure: Exit code 2 ***

please delete the 1.69 from the find boost line and try again

please delete the 1.69 from the find boost line and try again

thank you . one moment

please delete the 1.69 from the find boost line and try again

again the same error. this is my cmakelists: cmake_minimum_required(VERSION 3.0) project(test2) add_executable(test2 main.cpp) #set(BOOST_ROOT "C:\\Boost") #set(Boost_USE_STATIC_LIBS ON) #set(Boost_USE_MULTITHREADED ON) FIND_PACKAGE(Boost COMPONENTS system REQUIRED) set(Boost_USE_STATIC_RUNTIME ON) #add_executable(test2 main.cpp) #target_include_directories(test2 PUBLIC ${Boost_INCLUDE_DIRS}) #target_link_libraries(test2 ${Boost_LIBRARIES})

please copy the error message for me,

:)

please further try FIND_PACKAGE(Boost) IF (Boost_FOUND) MESSAGE(STATUS ${Boost_INCLUDE_DIR}) ENDIF()

please further try FIND_PACKAGE(Boost) IF (Boost_FOUND) MESSAGE(STATUS ${Boost_INCLUDE_DIR}) ENDIF()

now I make to some change and reah what cmakelists find the boost but i give new errors. I can show you. one moment please

please further try FIND_PACKAGE(Boost) IF (Boost_FOUND) MESSAGE(STATUS ${Boost_INCLUDE_DIR}) ENDIF()

why are there two find packages?

please further try FIND_PACKAGE(Boost) IF (Boost_FOUND) MESSAGE(STATUS ${Boost_INCLUDE_DIR}) ENDIF()

this is working but if I add #include <boost/asio.hpp> to main.cpp i get the error what you see below

delete one

yeah, you need to add them to target link libs now

undefined reference is a linker-error

delete one

yes. its wrong but not is solution of problem)

yeah, you need to add them to target link libs now

okey. one moment

oh.... it is an undefined reference to wsa i see

you forgot to link the windows socket api

or include it

-lws2_32

if(WIN32) target_link_libraries(test2 wsock32 ws2_32) endif()

before linking agains boost

i think

i think

one moment.

i think

wow. thank you very much!!!

i think

it work for me

i think

wow. thank you very much!!!

call me the cmake-god :D

no,.. just kidding

yes, my cmake-god :)))

yes, my cmake-god :)))

hahaha,... i am glad it worked out for you

thank you again

find all a,b,c,d<1000 where a^3+b^3=d^3+c^3.

plz help guys

in this

solution in c aur c++

I have never understood why beginners are given tasks with a mathematical bias. It does not help in learning the language))

find all a,b,c,d<1000 where a^3+b^3=d^3+c^3.

/warn read the rules

find all a,b,c,d<1000 where a^3+b^3=d^3+c^3.

https://wandbox.org/permlink/MVrgm78nOe6kR2od Lol

https://wandbox.org/permlink/MVrgm78nOe6kR2od Lol

but it doesn't work)

but it doesn't work)

Its concept of foo

okay, it was killed.. in own ide it works

https://wandbox.org/permlink/MVrgm78nOe6kR2od Lol

i really doubt his teacher would want to wait ~50 hours to check his homework

i really doubt his teacher would want to wait ~50 hours to check his homework

there was no time limit in the task)))))

true

I have never understood why beginners are given tasks with a mathematical bias. It does not help in learning the language))

Because you're supposed to know math, and it's easy to create the corresponding algorithm while concentrating on basics language aspects

Because you're supposed to know math, and it's easy to create the corresponding algorithm while concentrating on basics language aspects

Not every programmer has need in math.

Not every programmer has need in math.

But it's easy to find the algorithm. Usually it is even in the request or some Wikipedia page

And everyone should know basic maths

A computer is a calculator

To compute == to calculate

+1

+2

Rekt