In your customerType function, p and c are not initialized and so any code following that which uses them will not work correctly. You can pass the units consumed to customerType function or you can pass both previous and current to it.

How do i do that bro

Just add a parameter to that function like how you have defined unitConsumed. Right now it has no parameters

how can I check whether my C++ compiler version is latest ?

what is the use of const keyword while printing an array ? https://pastebin.com/SfhLvxUQ

It is a const reference. It means that the array won't be changed by the function (which is obvious here because you are just printing the array and this you don't have to change anything in the array) and the fact that it is a reference means the array won't be copied into the function and is thus more efficient. Since it is a const reference, you can also pass temporaries as arguments to the function. Also const references enforces an important property called immutability which becomes very important when you are dealing with multithreading.

would you please explain how it is more efficient ?

Because it is not copied into the function. Normally when you pass a variable by value instead of by reference, a copy of the variable is made. A std::array inside a function is allocated entirely on the stack. When you pass this variable by value to multiple functions, then multiple copies of it are made on the stack. Passing a reference saves this work.

how a copy of variable is made when passing by value ?

How to find second largest number among three ?

How to find second largest number among three ?

What is INT_MAX and INT_MIN

#include <stdio.h> int main() { int a[3] = {41,55,12}; int max = -1000; int min = 1000; int maxi = 0; int mini = 0; for (int i = 0; i<=2; i++) { if (a[i] > max) { max = a[i]; maxi = i; } if (a[i] < min) { min = a[i]; mini = i; } } for (int i = 0; i<2; i++) { if (i != maxi && i != mini) printf("second:%d\r\n",a[i]); } }

If what I know about these, I can use them in this program as well??

Yeah your choice...

Guys how to print days of a week using circular queue I got that topic I searched for the program online but didn't get any

Circular queue using linked list

I want to setup OpenCV in a windows machine. There is a blog which has steps with VS Code. We can also use Visual Studio to set it up. What would be better here?

Hey I have to make a setup where the led turns on with a push button I need to use gpio pins of raspberry pi for that and bcm2835 library with c++ I don’t know really where to begin can I get some help with it if possible

try this. https://github.com/WiringPi/WiringPi they have some example to use it.

Problem is this is wiringpi I need to use bcm2835

perhaps check linux kernel? does it support bcm2835? and change wiringPi source to use bcm2835 module?

We use like a raspberry pi and use it on cmd so we don’t use it on like Linux itself but just windows cmd

do you means rpi running linux and you access it via serial terminal or ssh? if this true then you can use lsmod to see what kernel module already loaded. n ig this is not related to cpp. try find rpi group perhaps they can assists you better? cmiiw

I don’t really understand what you mean here completely but what I meant is that the pi is running as a driver instead as a “pc” so its like a second driver in windows and I access it on cmd and I actually do use cpp files when I run files on cmd

hmm sorry i don't know your setup. just wait other user goodluck

Understood by setup you mean the breadboard setup?

i mean how you using rpi what os did you use linux, win10 iot, plan9, custom firmware aka bare metal etc.

I am using windows 10 rpi zero

https://raspberrypi.stackexchange.com/questions/39715/can-you-put-windows-10-iot-core-on-raspberry-pi-zero#39735

? But it does work though like I have run files on it

Linux mypi 5.10.17+ armv61 GNU/Linux

now lsmod | grep 2835. if you find it. find and change wiring pi source code from 2708 to 2835 compile and run it i never try this before so proceed with caution or just wait for other goodluck.

Hi guys I’m trying to give a returned value to another function to perform a task but its not working I’ve googled for a long time and i still can’t find a solution So if anybody can help me out🥲

MODIFIED VERSION : #include <iostream> using namespace std; string CustomerDetails(string name){ // this function is not mandatary you can just print from main cout<<"\n***** Welcome "<<name<<" *"<<endl; cout<<endl; return name; } int unitConsumed(double previous,double current){ double unit; unit = current - previous; return unit; } string customerType(double p, double c){ // taking parameters bcoz you can't say meter reading directly string domestic = "Domestic", industrial = "Industrial", commercial = "Commercial"; if (unitConsumed(p,c) < 100) return domestic; else if (unitConsumed(p,c) > 100 && unitConsumed(p,c) <= 200) return industrial; else // place 'else' instead of 'else if' then complier won't warn you return commercial; } int main() { string name; cout <<"Please Enter Your Name: "; getline(cin,name); // CustomerDetails(name); double currentMeter, PreviousMeter; cout <<"\n\nEnter Previous Meter Reading (kwh): "; cin>>PreviousMeter; cout<<"\nEnter Current Meter (kwh): "; cin>>currentMeter; unitConsumed(PreviousMeter, currentMeter); cout<<endl; cout<<unitConsumed(PreviousMeter, currentMeter); cout<<endl; cout <<customerType(PreviousMeter, currentMeter); return 0; }

I need to ask one query here. But i cannot send the images here. Can i dm someone in this group?

What is stack smashing detected??

sending images is disabled for a reason. Why would you need to send one?

Hii.....i am just a beginner.....can nyone suggest best websites or books or any other resources for beginners 🥺🥺🥺

Thanks a lot My problem was i didn’t think taking parameters for customerType was Mandatory

Hii.....i am just a beginner.....can nyone suggest best websites or books or any other resources for beginners 🥺🥺🥺

programiz