Have u got the solution to your problem? If yes, kindly share with me too.

Hello guys, Must arrays be used always as parameters to functions or can I just use them directly in functions in the case where they are global variables?

If you have an array in your .c/.cpp file, and you want to modify it's values - then pass the arrays to functions by reference — the called functions can modify the element values in the callers' original arrays: void foo(int *ar, int N) { for(int i = 0; i < N; ++i) *(ar+i) = 0; } Or, yes, a global array can be called by any function, but in this case you must be carefully and choose the right way to organize you program. Simple and, may, bad code: int arr [3] = {1, 2, 3}; void foo() { for(int i = 0; i < 3; ++i) *(arr+i) = 0; } See these: 1. http://people.scs.carleton.ca/~dehne/projects/cpp-doc/tutorial/tut3-1.html 2. http://www.mathcs.emory.edu/~cheung/Courses/255/Syllabus/1-C-intro/declare-array.html

How is malloc() and calloc() used?

How is malloc() and calloc() used?

Anyone have any link that they can refer to me that has solved a matrix in the form Ax=b by making the x matrix the subject and finding the inverse of A using C++?

Which one do think is better? VSCode or sublimetext?

Hey folks! I got a question: common sense says in header files we should only put declarations, but what if I want constexpr functions/methods in headers? I'm forced to write the implementation in there. Will this slow down the compilation eventually?

As I know it has nothing to do with the performance. Including headers is just like copying and pasting a file content. 🤷‍♂️

#include <iostream> #include <fstream> using namespace std; int main() { ifstream inData; inData.open("i.txt"); int l; int num; char k[31]; inData >> num; while (num != 999) { cout << num; for (l = 0; l < 31; l++) { inData >> k[l]; cout << k[l]; } inData >> num; } }

Hey folks! I got a question: common sense says in header files we should only put declarations, but what if I want constexpr functions/methods in headers? I'm forced to write the implementation in there. Will this slow down the compilation eventually?

so your suggestion essentially is "use constexpr definitions in header and forget all the fuss"?

#include <iostream> #include <fstream> using namespace std; int main() { ifstream inData; inData.open("i.txt"); int l; int num; char k[31]; inData >> num; while (num != 999) { cout << num; for (l = 0; l < 31; l++) { inData >> k[l]; cout << k[l]; } inData >> num; } }

#include <iostream> #include <fstream> using namespace std; int main() { ifstream inData; inData.open("i.txt"); int l; int num; char k[31]; inData >> num; while (num != 999) { cout << num; for (l = 0; l < 31; l++) { inData >> k[l]; cout << k[l]; } inData >> num; } }

Well I like concepts more than modules actually

what are you asking? Please don't use forward declaration. This is not C

Mr Danya, may I ask something?

Mr Danya, may I ask something?

Have you made anything useful in C++ yet or not? Is that possible to make something useful in C++ by yourself without wasting so much of your time?

Dontasktoask.com

Is money useful? I think so...

The problem is that once num is assigned 999, the loop does not terminate

I like C++ because of its hardness

I like C++ because of its hardness

I haven't not touched c++ yet but is c and c++ the same

No, it's two totally different languages that share some syntax

No, it's two totally different languages that share some syntax

Even in new C++ versions many things has changed in syntax. Let's say has added

Well, the code is meant to extract data from a file called i.txt whose content is( 1FFFFFFxxxxTTTTTTTxxxxFFFFTTTT999) And it wakes use of a sentinel controlled while loop. However, the loop continues indefinitely even upon reaching the sentinel value

Well, the code is meant to extract data from a file called i.txt whose content is( 1FFFFFFxxxxTTTTTTTxxxxFFFFTTTT999) And it wakes use of a sentinel controlled while loop. However, the loop continues indefinitely even upon reaching the sentinel value

if that's your input, there are not 31 values between 1 and 999, hence k[29] = 9, k[30] = 9 and num = 9

https://twitter.com/mcypark/status/1352022455846506497?s=09

No, it is just a driver I am using to test a function in a code meant to mark answers. I need to properly extract a mixture of int and char values. That I do with the help of the sentinel loop where should 999 be extracted into the into variable, loop breaks and extraction ceases

Is that pattern matching?

Making things using pure C may end your life. I wonder how webserver like nginx have been made in C

if that's your input, there are not 31 values between 1 and 999, hence k[29] = 9, k[30] = 9 and num = 9

Making things using pure C may end your life. I wonder how webserver like nginx have been made in C

There are 30 char answers to be checked, extraction is done using a c_string and final element of the c_string must be a null character hence the reason for 31 size

"Nothing better than C" -Linus Toldvards

wdym no? That's what happens with your input, num will never be 999

can you provide an example to show what fails then?

It's a fact that C has less overhead than C++

It's a fact that C has less overhead than C++

I tested it using cout and num becomes 999 at a point however the loop still continues

That's not true

that's simply wrong - if num were 999 it would stop and I even told you what's wrong