This one here adds more information to the code, so u can also try it out

I think it's my compiler but it gave me a lot of errors

Let us hear what errors it gave you

Yeah it was the compiler's problem. Sorry if that uneased you

Of course it didn't. I told you they might be typo errors...so let us know so we see what error it gave you

Well most didn't make sense to me

Read the source code on your editor line by line, then you can get a feel where the error is coming from. Also I think u can share your errors here, others have did and so can u too

basic_ostream<char> and const char *

It also says Expected ' ( ' for function type cast or type construction

In what line of the code...or what was the line highlighted as error?

It also says Expected ' ( ' for function type cast or type construction

What compiler are you using?

For my function numberMaths(int a,int b)

Declare int a and int b outside the function in int main....then pass it as arguments to the function

Cxxdroid

So like int main(int a,int b)????

Oops...I see...beginners are advised to use IDE..not because text editors are bad but Bcos IDEs solves most of the problem like debugging, syntax highlighting and all that for you. I'd advise you install code blocks and learn from there or get Visual Studio Community; with these your learning curve will be ok.

Oops...I see...beginners are advised to use IDE..not because text editors are bad but Bcos IDEs solves most of the problem like debugging, syntax highlighting and all that for you. I'd advise you install code blocks and learn from there or get Visual Studio Community; with these your learning curve will be ok.

Yeah I use the compiler directly so you can imagine my confusion

Go get an IDE like code blocks or visual studio community and then we can help you. You can't be a beginner and want to code from a text editor, it'll be hard for you.

Yeah it's hard I guess. I'll download it. Thanks

After downloading any of them and setting it up, them copy the source code again...if it doesn't work, still let us know. Have a nice day

What language are you using, c or c++?

What language are you using, c or c++?

constexpr unsigned len(const char* str) { return *str ? 1+len(str) : 0; }

Hello. I am writing code for an Arduino using the great Stack Overflow Driven Development methodology and some random searches. Now, I have a question that I am not finding an answer because it is a little more of the “how to approach this” kind, rather than “how to do this”. I have a function that spits a json status out of the IP/Ethernet port. Now this program has grown to the point where I need this status report to be selective. I therefore plan to add a parameter to the function to tell it which variables to include in its json status report. The classic way of doing this, I believe, is a bitwise OR of a bunch of bit constants, so that I could for instance call my function like: statusReport(EthernetClient c, REPORT_TEMP1 | REPORT_TEMP2); or perhaps: statusReport(EthernetClient c, REPORT_ALL); Inside the function I would do something like: if ( requestedStatus & REPORT_TEMP1 ) { doc[“… } // Add to the json doc the temperature for sensor 1 Now my question is, would this approach be the most recommended for this environment (micro controller, C++) or would any other approach have any advantage in legibility, code size, efficiency or any other I haven’t considered? Thanks for any inspiration you may want to share.

How would you find out where is the problem*

Using profilers

/* C program to demonstrate example of floor and ceil functions.*/ #include <stdio.h> #include <math.h> int main() { float val; float fVal,cVal; printf("Enter a float value: "); scanf("%f",&val); fVal=floor(val); cVal =ceil(val); printf("floor value:%f \nceil value:%f\n",fVal,cVal); return 0; }

Can you let me know what is the output

Can you let me know what is the output

Write a program which reads two matrix and multiply them if possible.with in arry

can anyone explain how counting bits program works?

Counting bits program? What do you mean?

problem solved

Still what is "counting bits program"?

Still what is "counting bits program"?

Once Google it

google it

Hi, is there something like the final keyword but for the root of a class hierarchy instead of the leafs?

It says counting bits in an integer... you were asking that?

Elaborate more

Elaborate more

On a second thought maybe that's just a class that does not inherit from anything.

It says counting bits in an integer... you were asking that?

When reading a codebase the final keyword is quite useful to know the hierarchy ends there. I was thinking about something similar but in the opposite direction of the tree

There is no standard way to address what you want. But ... there are some workarounds: 1- WRITE CLEAN CODE: If the code follows SOLID principles, you could easily find the base class by its name or its virtual defined members ... . 2- TAKE ADVANTAGE OF MACROS: Defines some empty macros just for mark whatever you want: core.h #define IT_IS_BASE #define IT_IS_NOT_BASE usage.h IT_IS_BASE struct base; IT_IS_NOT_BASE struct not_base final: base {} (NOTE: Second way is just for fun).