Beginners - January 2024

Vector of struct vs. two 1D vectors (1,2,3)

Greetings, I received the prototype of a simulation code from a colleague for a bunch of particles in two dimensions (x and y coordinates), and I went and impr...

[44 replies] Last: Thanks mbozzi for the interesting reference and your prototyped implem... (by PhysicsIsFun)

by PhysicsIsFun

OpenMP to compute PI

Greetings, I am working my way into OpenMP. The following code is supposed to compute pi. It works fine for one thread, but in case of multiple threads the re...

[9 replies] Last: Thanks mbozzi, I understand! (by PhysicsIsFun)

by jNc

improve logger function

void writeToLog(){ string fileName = "/home/j/s/textFiles/logMPU.txt"; string line = ""; int lines = 0; ifstream file(fileName.c_str()); string d_txtFil...

[7 replies] Last: Much depends, of course, on the usage of the logger and it's required ... (by seeplus)

by sihaqqi

Cstring program not executing

Hello, Can anyone please guide what is wrong with my program. copied from a book I recently purchased and tried in code blocks. The terminal opens and I tyoe bu...

[10 replies] Last: I know more than a few GeeksForGeeks C++ code examples are big steamin... (by George P)

by nvthielen

getchar and print c

hallo, a starters qwestion i wand to get char from the terminal window, but get a gcc error compiling it. ......................................... test...

[3 replies] Last: i wand to get char from the terminal window Note that whilst getcha... (by seeplus)

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