Ohh I see

I think most compilers should have warnings for cases like this (probably not enabled by default)

int main () { int a, b; a = b = 4; b = a++; printf ("%d %d %d %d", a++, --b, ++a, b--); } 5 3 7 3 5 4 5 3 6 2 6 4 Syntax Error

int main () { int a, b; a = b = 4; b = a++; printf ("%d %d %d %d", a++, --b, ++a, b--); } 5 3 7 3 5 4 5 3 6 2 6 4 Syntax Error

Output

char *copy ( char *, char * ) ; int main( ) { char *str ; char source[ ] = "Jaded" ; char target[ 10 ] ; str = copy ( target, source ) ; printf ( "%s\n", str ) ; return 0 ; } char *copy ( char *t, char *s ) { char *r ; r = t ; while ( *s != '\0' ) { *t = *s ; t++ ; s++ ; } *t = '\0' ; return ( r ) ; }

char *copy ( char *, char * ) ; int main( ) { char *str ; char source[ ] = "Jaded" ; char target[ 10 ] ; str = copy ( target, source ) ; printf ( "%s\n", str ) ; return 0 ; } char *copy ( char *t, char *s ) { char *r ; r = t ; while ( *s != '\0' ) { *t = *s ; t++ ; s++ ; } *t = '\0' ; return ( r ) ; }

@gameraccoon bro I need a lil understanding of the code at function copy

the line *t='\0'; before return statement, I want to know how *t will still points to the last byte of memory in the char pointer outside the loop? I mean t++; is happening inside the while loop so how the value remains after the loop ends fot *t

int main () { int a, b; a = b = 4; b = a++; printf ("%d %d %d %d", a++, --b, ++a, b--); } 5 3 7 3 5 4 5 3 6 2 6 4 Syntax Error

6 2 7 4

int main () { int a, b; a = b = 4; b = a++; printf ("%d %d %d %d", a++, --b, ++a, b--); } 5 3 7 3 5 4 5 3 6 2 6 4 Syntax Error

5373

int main () { int a, b; a = b = 4; b = a++; printf ("%d %d %d %d", a++, --b, ++a, b--); } 5 3 7 3 5 4 5 3 6 2 6 4 Syntax Error

5373

I always forget, is this one above defined in C++17? I mean the order of execution

Good evening everyone In dart language there is an expression to return in function which make the code easier like int fun () => 1; Which means int fun () { return 1; } Is there any way to do that in c++ ? And is there any way to pass an optional parameter to functions in c++ too ?

Good evening everyone In dart language there is an expression to return in function which make the code easier like int fun () => 1; Which means int fun () { return 1; } Is there any way to do that in c++ ? And is there any way to pass an optional parameter to functions in c++ too ?

No way

Good evening everyone In dart language there is an expression to return in function which make the code easier like int fun () => 1; Which means int fun () { return 1; } Is there any way to do that in c++ ? And is there any way to pass an optional parameter to functions in c++ too ?

That's an expression body function/method, and afaik it's not supported in standard C++

Hi guys

One of you would help me?

I have to write a programme where I'll create a array (MAX 10 for example) and the programme gives me back the first 10 prime numbers

Good evening everyone In dart language there is an expression to return in function which make the code easier like int fun () => 1; Which means int fun () { return 1; } Is there any way to do that in c++ ? And is there any way to pass an optional parameter to functions in c++ too ?

No

Just write a return lmao

I have to write a programme where I'll create a array (MAX 10 for example) and the programme gives me back the first 10 prime numbers

Task is unclear

What is that array what's it for. And what have you done already

Task is unclear

Array is a vettor he start from 0 to N-1 (sorry I'm italian)

We won't do that for you, but we might suggest a solution

I know

Array is a vettor he start from 0 to N-1 (sorry I'm italian)

Then why it exists lol

If you know that it is a progression you would need only two numbers

First and last

DIO

DIO

We

Ho provato a fare come mi hai detto ma niente

We

www.deepl.com

Quindi sto chiedendo un po' di consigli per arrivarci

Let's say it's an array of indeces of the prime numbers. Then you'd just loop over it and find a prime by that index

Quindi sto chiedendo un po' di consigli per arrivarci

here they will ban you if you don't speak english

Quindi sto chiedendo un po' di consigli per arrivarci

English only

English only

Ah sorry

Create a vector of modulus 10 for example and I must get the first 10 prime numbers, if I declare the vector with modulus 20 then the program must give me the first 20 prime numbers

What the actual heck is the vector of modulus 10?

It makes zero sense

Moduls is its greatness

>greatness Laughing my ass out

...

Anyways you mean it's size?

Yes

for(int i = 0; i < vec.size(); ++i) { auto prime = NthPrime(i); }

for(int i = 0; i < vec.size(); ++i) { auto prime = NthPrime(i); }

Ok, but I need that the program give me the first 10 prime numbers

If the size is 20, I need the first 20 prime numbers

If the size is 20, I need the first 20 prime numbers

What ?

for(int i = 0; i < vec.size(); ++i) { auto prime = NthPrime(i); }

That's it. That's all the algo

Google up prime finding yourself

Okok

Thanks

Now I'll try alone

int main () { int a, b; a = b = 4; b = a++; printf ("%d %d %d %d", a++, --b, ++a, b--); } 5 3 7 3 5 4 5 3 6 2 6 4 Syntax Error

UNDEFINED BEHAVIOR!!!

Heeey I've got a question I'm working with platformio with an ESP32 (Arduino Framework) right now, and it seems that compilation is starting at the wrong file -- which should be fine, I trust the compiler knows its stuff... but then the definitions go and throw a bunch of issues because I've got some libraries which depend on user-defined symbols and they fail when the #include is hit at the wrong point, because it's defined in main.cpp Anyway I solved this by making the compiler ignore all files but that one, and include them through each file's #include directives BUT THEN As the libraries compile, the compiler complains that some header files are missing, and even though I checked and they were, in fact, PRESENT, it still complains and I don't know what to do

I'll post a link to imgur real quick

https://imgur.com/a/knFhWxE

Can anyone help?

Actually C++ is good for beginners Because C++ have a common syntax

Right

uint32_t myInt = 123456; std::cout << std::setfill('0') << std::setw(8) << std::hex << myInt << '\n';

What you trying to write into a string variable? myInt?

What you trying to write into a string variable? myInt?

I`ve tried to make a md5 hash

I`ve already found a solution)

I`ve tried to make a md5 hash

ok, thanks i wanted to understand

#include <bits/stdc++.h> using namespace std; int main() { int n; cin>>n; int ans=0; for(int i=0;i<n;i++) { int x; cin>>x; ans^=x; // what do this mean ???? } cout<<ans<<endl; }

#include <bits/stdc++.h> using namespace std; int main() { int n; cin>>n; int ans=0; for(int i=0;i<n;i++) { int x; cin>>x; ans^=x; // what do this mean ???? } cout<<ans<<endl; }

Try to Google

Answer=answer^x maybe?

Try to Google

I searched about xor gate cpp code, but didn't found something like this

I searched about xor gate cpp code, but didn't found something like this

xor gate wat

xor gate wat

a guy said on hackerearth that this is xor gate method

#include <bits/stdc++.h> using namespace std; int main() { int n; cin>>n; int ans=0; for(int i=0;i<n;i++) { int x; cin>>x; ans^=x; // what do this mean ???? } cout<<ans<<endl; }

People are using many techniques but i consider the easiest to be XOR gate.This question is meant to be solved using Xor gate. Here is my Code-

I searched about xor gate cpp code, but didn't found something like this

https://docs.microsoft.com/ru-ru/cpp/cpp/cpp-built-in-operators-precedence-and-associativity?view=msvc-160

Try learn Googling

Yeah, thanks 🤔🤔🤔

ru-ru

ru-ru

Quote of the day:

I'm getting warning: implicit declaration of function for function declarations that are already in header files that come with the compiler, I'm using, gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0 Copyright (C) 2019 Free Software Foundation, Inc.

Anyway to solve this or do I have to manually declare the functions in my file?

But works fine for, gcc (MinGW.org GCC Build-2) 9.2.0 Copyright (C) 2019 Free Software Foundation, Inc. In my Windows

Can you send the header file and source file?

Can you send the header file and source file?

the header file from the compiler directory?

btw Im using WSL to compile my program