Help !! There's seriously frustrating-illogical problem happening with my code, in this part (line 188 of attached code): sort(_fam_size_order.begin(), _fam_size_order.end(), [&_fam_costs, &inverted](int a, int b){ return inverted?(_fam_costs[a]>_fam_costs[b]):(_fam_costs[a] < _fam_costs[b]); }); Program runs as expected but if I change greater/less than signs to <= and >= , program doesn't run at all. No Compilation error, No runtime warning - It just doesn't print anything at all !!! Using mingw-64 on windows 10. Compile command : g++ -lpthread -Wl,--no-as-needed -static-libstdc++ -static-libgcc .\santa_workshop\dt.cpp -o .\santa_workshop\dt.exe -Wall For sidenote : Currently, I'm saving output to file, but it doesn't print anything on console as well. Here's the code : https://pastebin.com/Fzk4BRew

anyone know why make strips debug symbols despite compiling with -ggdb flag?

This flag is only defining the type of debug info to generate. The instruction to generate it is -g, it must be stated separately. And on the link phase you can still remove the debug info by mentioning -s flag, despite the fact it has been generated earlier. So check all this and you'll be fine

in java we use chartat() to find character at index position. but how to do in c?

Just s[i] ..

oh after looking on stackoverflow i thought -ggdb was the same as -g, just more specific to gdb

Check -s.

Probably you have floating point arithmetics miracles there, like falling into NaN or infinity. You'll need to check. Why do you use volatile-s their, btw ?

Help !! There's seriously frustrating-illogical problem happening with my code, in this part (line 188 of attached code): sort(_fam_size_order.begin(), _fam_size_order.end(), [&_fam_costs, &inverted](int a, int b){ return inverted?(_fam_costs[a]>_fam_costs[b]):(_fam_costs[a] < _fam_costs[b]); }); Program runs as expected but if I change greater/less than signs to <= and >= , program doesn't run at all. No Compilation error, No runtime warning - It just doesn't print anything at all !!! Using mingw-64 on windows 10. Compile command : g++ -lpthread -Wl,--no-as-needed -static-libstdc++ -static-libgcc .\santa_workshop\dt.cpp -o .\santa_workshop\dt.exe -Wall For sidenote : Currently, I'm saving output to file, but it doesn't print anything on console as well. Here's the code : https://pastebin.com/Fzk4BRew

Can anyone compile it on any other environment and give me a executable ? I doubt mingw compilers now !!

That's cpu specific

Help !! There's seriously frustrating-illogical problem happening with my code, in this part (line 188 of attached code): sort(_fam_size_order.begin(), _fam_size_order.end(), [&_fam_costs, &inverted](int a, int b){ return inverted?(_fam_costs[a]>_fam_costs[b]):(_fam_costs[a] < _fam_costs[b]); }); Program runs as expected but if I change greater/less than signs to <= and >= , program doesn't run at all. No Compilation error, No runtime warning - It just doesn't print anything at all !!! Using mingw-64 on windows 10. Compile command : g++ -lpthread -Wl,--no-as-needed -static-libstdc++ -static-libgcc .\santa_workshop\dt.cpp -o .\santa_workshop\dt.exe -Wall For sidenote : Currently, I'm saving output to file, but it doesn't print anything on console as well. Here's the code : https://pastebin.com/Fzk4BRew

You're saying if compiled on one windows machine, it won't work on other ????

Help !! There's seriously frustrating-illogical problem happening with my code, in this part (line 188 of attached code): sort(_fam_size_order.begin(), _fam_size_order.end(), [&_fam_costs, &inverted](int a, int b){ return inverted?(_fam_costs[a]>_fam_costs[b]):(_fam_costs[a] < _fam_costs[b]); }); Program runs as expected but if I change greater/less than signs to <= and >= , program doesn't run at all. No Compilation error, No runtime warning - It just doesn't print anything at all !!! Using mingw-64 on windows 10. Compile command : g++ -lpthread -Wl,--no-as-needed -static-libstdc++ -static-libgcc .\santa_workshop\dt.cpp -o .\santa_workshop\dt.exe -Wall For sidenote : Currently, I'm saving output to file, but it doesn't print anything on console as well. Here's the code : https://pastebin.com/Fzk4BRew

im using make, and someone is helping me correct it. going to try that first and get back to ya

Don't use make. CMake !

y would this b bad for random data

sha256sum( date in seconds since epoch + nanoseconds * current cpu speed )

If you using it instead a RNG then it's bad

well was thinking i could generate entropy with this

From where I learn it

Try Google searching man. YouTube programming tutorials in Hindi. But learn English before programming languages :)

I really don't understand something, all the higher education in India is in English, so why Indians can't speak proper English?

Maybe you know some chats in telegram about embedded software in english?

What is embedded software in English?

*sigh*

huehue

Is any one here

Udemy for your help

I looked some lectures, and one said that changing small vector to array in hot spot made program run 40-70% faster, but this are rare cases

Hewwo Can anyone explain what is the benefit of fixed-size array on stack versus dynamic size memory block (array) in heap? Except possible compiler optimizations * There are no any performance differences: in both cases the cpu just accesses memory; memory consuming isn't heavily different

Allocating memory on a heap costs more than on a stack

not always

Allocating memory on a heap costs more than on a stack

Almost always

you write the code

scanf("%d", &g->N); Is this thing ok to do in C?

scanf("%d", &g->N); Is this thing ok to do in C?

The points to operator is used to dereference and access something. You dont need the address of operator and would just be g->N

yeah right, but that gives me warning

yeah right, but that gives me warning

Not actually In the case of allocating memory on stack we just need to reduce current stack pointer register, with heap we need to use system calls I wouldn't call it benefit Is there any other benefit?