[Problem] Pythagorean triplet

[ademclk]

Pythagorean triplet

Pythagorean triplet is a set of three natural numbers where a < b < c.

$a^2 + b^2 = c^2$

There is exactly one Pythagorean triplet for which $a + b + c = 1000$.

Find a, b and c and print these numbers out.

[onurbbr]

@Legoeggolas Your code doesn't work on g++ and clang. Update the project with your working code.

[Legoeggolas]

@Legoeggolas Your code doesn't work on g++ and clang. Update the project with your working code.

Double checked, works just fine for me.

What problems are you facing with the code?
I have intentionally commented out an include directive in the header file, maybe that is the cause of your issue?

[onurbbr]

@Legoeggolas Your code doesn't work on g++ and clang. Update the project with your working code.

Double checked, works just fine for me. What problems are you facing with the code? I have intentionally commented out an include directive in the header file, maybe that is the cause of your issue?

It's not my issue. I tried my linux machines. It's not working.

[onur@archlinux pythagorean_triplet]$ clang solution.cpp
/usr/bin/ld: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64/Scrt1.o: in function _start': /build/glibc/src/glibc/csu/../sysdeps/x86_64/start.S:103: undefined reference to main' clang-14: error: linker command failed with exit code 1 (use -v to see invocation)

More detailed info:
[onur@archlinux pythagorean_triplet]$ clang solution.cpp -v
clang version 14.0.6
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-pc-linux-gnu/11.3.0
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-pc-linux-gnu/12.2.0
Found candidate GCC installation: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.3.0
Found candidate GCC installation: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0
Selected GCC installation: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
Found CUDA installation: /opt/cuda, version
"/usr/bin/clang-14" -cc1 -triple x86_64-pc-linux-gnu -emit-obj -mrelax-all --mrelax-relocations -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name solution.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -mllvm -treat-scalable-fixed-error-as-warning -debugger-tuning=gdb -v -fcoverage-compilation-dir=/mnt/SSD/Projects/GitHub/callofcode/challenges/C++/pythagorean_triplet -resource-dir /usr/lib/clang/14.0.6 -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0 -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0/x86_64-pc-linux-gnu -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0/backward -internal-isystem /usr/lib/clang/14.0.6/include -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../x86_64-pc-linux-gnu/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdeprecated-macro -fdebug-compilation-dir=/mnt/SSD/Projects/GitHub/callofcode/challenges/C++/pythagorean_triplet -ferror-limit 19 -stack-protector 2 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -fcolor-diagnostics -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/solution-f8d086.o -x c++ solution.cpp
clang -cc1 version 14.0.6 based upon LLVM 14.0.6 default target x86_64-pc-linux-gnu
ignoring nonexistent directory "/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../x86_64-pc-linux-gnu/include"
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0
/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0/x86_64-pc-linux-gnu
/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0/backward
/usr/lib/clang/14.0.6/include
/usr/local/include
/usr/include
End of search list.
"/usr/bin/ld" -pie --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o a.out /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64/Scrt1.o /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64/crti.o /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/crtbeginS.o -L/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0 -L/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/lib -L/usr/lib /tmp/solution-f8d086.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/crtendS.o /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64/crtn.o /usr/bin/ld: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64/Scrt1.o: in function _start': /build/glibc/src/glibc/csu/../sysdeps/x86_64/start.S:103: undefined reference to main'
clang-14: error: linker command failed with exit code 1 (use -v to see invocation)

[Legoeggolas]

@onurbbr
It is because my code is not supposed to run as-is.

You're supposed to either include the header (where a function is provided) and compile with that, or uncomment the main function (and necessary includes) in the header and source files.

[onurbbr]

@onurbbr It is because my code is not supposed to run as-is.

You're supposed to either include the header (where a function is provided) and compile with that, or uncomment the main function (and necessary includes) in the header and source files.

Activating main does not change the result. This time I'm getting a namespace error. When I enable Namespace, the linker cannot link the code you wrote.

[onurbbr]

[onur@archlinux pythagorean_triplet]$ clang solution.cpp
solution.cpp:37:10: error: no member named 'cout' in namespace 'std' std::cout << "The values are: "; ~~~~~^ solution.cpp:39:14: error: no member named 'cout' in namespace 'std' std::cout << val << " "; ~~~~~^ solution.cpp:42:10: error: no member named 'cout' in namespace 'std' std::cout << std::endl; ~~~~~^ solution.cpp:42:23: error: no member named 'endl' in namespace 'std' std::cout << std::endl; ~~~~~^ 4 errors generated.

When I enable std and iostream it gives another linker error.

[onur@archlinux pythagorean_triplet]$ clang solution.cpp
/usr/bin/ld: /tmp/solution-aaf7f3.o: in function main': solution.cpp:(.text+0x1bf): undefined reference to std::cout' /usr/bin/ld: solution.cpp:(.text+0x1cb): undefined reference to std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)' /usr/bin/ld: solution.cpp:(.text+0x22a): undefined reference to std::cout' /usr/bin/ld: solution.cpp:(.text+0x22f): undefined reference to std::ostream::operator<<(int)' /usr/bin/ld: solution.cpp:(.text+0x23e): undefined reference to std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)' /usr/bin/ld: solution.cpp:(.text+0x256): undefined reference to std::cout' /usr/bin/ld: solution.cpp:(.text+0x25d): undefined reference to std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)' /usr/bin/ld: solution.cpp:(.text+0x262): undefined reference to std::ostream::operator<<(std::ostream& (*)(std::ostream&))' /usr/bin/ld: /tmp/solution-aaf7f3.o: in function __cxx_global_var_init': solution.cpp:(.text.startup+0xc): undefined reference to std::ios_base::Init::Init()' /usr/bin/ld: solution.cpp:(.text.startup+0x13): undefined reference to std::ios_base::Init::~Init()' clang-14: error: linker command failed with exit code 1 (use -v to see invocation)

Error details (--verbose)
[onur@archlinux pythagorean_triplet]$ clang solution.cpp -v
clang version 14.0.6 Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-pc-linux-gnu/11.3.0 Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-pc-linux-gnu/12.2.0 Found candidate GCC installation: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.3.0 Found candidate GCC installation: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0 Selected GCC installation: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0 Candidate multilib: .;@m64 Candidate multilib: 32;@m32 Selected multilib: .;@m64 Found CUDA installation: /opt/cuda, version "/usr/bin/clang-14" -cc1 -triple x86_64-pc-linux-gnu -emit-obj -mrelax-all --mrelax-relocations -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name solution.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -mllvm -treat-scalable-fixed-error-as-warning -debugger-tuning=gdb -v -fcoverage-compilation-dir=/mnt/SSD/Projects/GitHub/callofcode/challenges/C++/pythagorean_triplet -resource-dir /usr/lib/clang/14.0.6 -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0 -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0/x86_64-pc-linux-gnu -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0/backward -internal-isystem /usr/lib/clang/14.0.6/include -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../x86_64-pc-linux-gnu/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdeprecated-macro -fdebug-compilation-dir=/mnt/SSD/Projects/GitHub/callofcode/challenges/C++/pythagorean_triplet -ferror-limit 19 -stack-protector 2 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -fcolor-diagnostics -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/solution-ed3d52.o -x c++ solution.cpp clang -cc1 version 14.0.6 based upon LLVM 14.0.6 default target x86_64-pc-linux-gnu ignoring nonexistent directory "/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../x86_64-pc-linux-gnu/include" ignoring nonexistent directory "/include" #include "..." search starts here: #include <...> search starts here: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0 /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0/x86_64-pc-linux-gnu /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../include/c++/12.2.0/backward /usr/lib/clang/14.0.6/include /usr/local/include /usr/include End of search list. "/usr/bin/ld" -pie --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o a.out /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64/Scrt1.o /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64/crti.o /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/crtbeginS.o -L/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0 -L/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/lib -L/usr/lib /tmp/solution-ed3d52.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/crtendS.o /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.0/../../../../lib64/crtn.o /usr/bin/ld: /tmp/solution-ed3d52.o: in function main': solution.cpp:(.text+0x1bf): undefined reference to std::cout' /usr/bin/ld: solution.cpp:(.text+0x1cb): undefined reference to std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)' /usr/bin/ld: solution.cpp:(.text+0x22a): undefined reference to std::cout' /usr/bin/ld: solution.cpp:(.text+0x22f): undefined reference to std::ostream::operator<<(int)' /usr/bin/ld: solution.cpp:(.text+0x23e): undefined reference to std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)' /usr/bin/ld: solution.cpp:(.text+0x256): undefined reference to std::cout' /usr/bin/ld: solution.cpp:(.text+0x25d): undefined reference to std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)' /usr/bin/ld: solution.cpp:(.text+0x262): undefined reference to std::ostream::operator<<(std::ostream& (*)(std::ostream&))' /usr/bin/ld: /tmp/solution-ed3d52.o: in function __cxx_global_var_init': solution.cpp:(.text.startup+0xc): undefined reference to std::ios_base::Init::Init()' /usr/bin/ld: solution.cpp:(.text.startup+0x13): undefined reference to std::ios_base::Init::~Init()'