Ohhh I am so ridiculous

I wrote a function that prints the matrices onto the screen and called it "print" and instead of using it I accidentally called printf

@Neko_cpp

I have a problem with my assingments in C language are there anybody can help me to do it?

I have a problem with my assingments in C language are there anybody can help me to do it?

Just ask the problem you're facing!

It is about file handling assignment

But I'm a beginner for it

Just ask the problem you're facing!

I have a method that takes a struct array as input, but I only need the first record of this struct array. how can I take the first record? I tried &mystruct [1] but it doesn't work...

int main(){ char *infix="a+b*c"; char *post; intopos(infix,post); for(int i=0;post[i]!='\0';i++){ cout<<post[i]; }

this for loop isn't working

can anyone explain me why it isn't?

i'm getting the result in post(pointer of char)

Just do:

for(; *post; ++post)

when i print cout<<post.. it works

Also the error is probably in the intopos function

Also the error is probably in the intopos function

there is no error in that func

when i print cout<<post.. it works

this is working

why for loop isn't

there is no error in that func

Can you send it?

sure

can i send ss in the group?

Yes

#include<bits/stdc++.h> using namespace std; int isoperand(char ch){ if(ch>='a' && ch<='z'){ return 1; } else{ return 0; } } int prcd(char ch){ switch(ch){ case'+':case '-':return 5; case'*' : case '/' :return 10; default : return 1; } } void intopos(char*infix,char *post){ int i=0,j=0; stack<char>stk; stk.push('#'); while(infix[i]!='\0'){ char ch=infix[i]; if(isoperand(ch)){ post[j++]=infix[i++]; } else{ if(prcd(infix[i])>prcd(stk.top())){ stk.push(infix[i++]); } else{ post[j++]=stk.top(); stk.pop(); } } } while(!stk.empty()){ post[j++]=stk.top(); stk.pop(); } } int main(){ char *infix="a+b*c"; char *post; intopos(infix,post); cout<<post; }

Why are you using char arrays?

In C++ use string :)

when i use loop to print ..post(pointer of char array) it isn't workin

In C++ use string :)

It's less error prone and cleaner

Why are you using char arrays?

but char should be printed in loop

when i print cout<<post[0]<<post[1];

even this isn't working

Wait Ill look at iz

but i print only post[0];

this works

But stack is a horrible way to do that you allocate on HEAP!

But stack is a horrible way to do that you allocate on HEAP!

sry?

😂

where i'm wrong?

while(!stk.empty()){ post[j++]=stk.top(); stk.pop(); }

you need to reset j to 0

As you might write outside the array bounds - SIGGEV incomming

you need to reset j to 0

Before the loop

At least that's how it looks like - maybe there is a other error. It's hard to see on a smartphone

while(!stk.empty()){ post[j++]=stk.top(); stk.pop(); } I guess with should copy the contents for stack to arr?

where i'm wrong?

did it work?

you need to reset j to 0

Why??... If there are some operators left in the stack I'm adding that

Operators in the postfix array

Wait let me copy it into a proper text editor...

Ok

And let me clean it up a little it's almost as ugly as my code!

Sry have a spontaneous meeting now - I will come back to this later :)

I have a method that takes a struct array as input, but I only need the first record of this struct array. how can I take the first record? I tried &mystruct [1] but it doesn't work...

code is C

Sure. Thanks!

Hey

See pinned message😉

I did

Have you tried solving this?

Homework?

First try solve it

do you even read the rules

Lol

Hi guys,my teacher said that I need to implement a parallel queue but in order to transfer the number of threads that will work with this function to the function as the second parameter. As I understand it, I need to make a vector of threads in private? Or something else? Can tell please?

Okey. My task: realize parallel queue and single queue. And compare it. But when I realizing parallel I must add to function second parameter - number of Threads. For example: push(const T& data, unsigned int numberOfThreads) I don’t know how realize it and how it will be work.

Plz send me some pdf

C Or java

I don’t know why he said to do the second parameter and for what. Yes,I have a mutex and a cv. Maybe it is necessary that in main not to write initialization of threads? Only add values? I thought use a Thread Pool P.S. queue my implementation not stl

This second parameter put me in stupor

Yes, I implemented everything as you said. But maybe the teacher meant that the threads would be implemented inside the function, this second parameter? For exmp: popFront(T key) { std::thread thread ([&]() { mutex.lock(); pop_front(key); mutex.unlock(); }); thread.detatch(); } } And second parameter will be number of threads....its just a universe task,this stupid tasks

okey,thx so much

Program to find gross salary. #include<stdio.h> int main() { int gs,bs,da,ta; printf(“enter basic salary: ”); scanf(“%d”,&bs); da=(10*bs)/100; ta=(12*bs)/100; gs=bs+da+ta; printf(“gross salary=%d”,gs); return 0; } 😭😭where is the problem.... somebody pls

Hey guys, does anybody have experience using pthreads library? Does it work well for cross platform (Linux, Mac, Windows, Android, IOs) or should I write my own wrapper?!

Pthreads requires special libraries and reduces perfomance on windows machines

Well I would love to use C++ threads because I'm familiar with them but my program is written in C99 C 😅

which compiler

Might be a benefit to update that codebase.

Hmm I think I will go and create my own threading library then 😐

Maybe it's better anyways because I want full access and speed