this is the problem: alex has written a programm that prints numbers from 1 to 5000 in deifferent lines but unfortunately his \t has a problem and the programm has producted a huge number "12345678910111213141516..." now he want know the k'th number of this huge number. for example input 10 and output 1

#include<iostream> using namespace std; int main() { int k; double x; cin>>k; if(k<10) { cout<<k; } if(k>9&&k<190) { x=(k-9)/2.0; if(x-int(x)!=0) { x=int (x)+1; } x=x+9; if(k%2==0) cout<<int (x)/10; else cout<<int (x)%10; } if(k>189&&k<2890) { x=(k-189)/3.0; if(x-int (x)!=0) { x=int (x)+1; } x+=99; if(k%3==0) { cout<<int (x)%10; } else if(k%3==1) { cout<<int (x)/100; } else if(k%3==2) { cout<<(int (x)/10)%10; } } if(k>2889) { x=(k-2889)/4.0; if(x-int (x)!=0) { x=int (x)+1; } x+=999; if(k%4==2) { cout<<int (x)/1000; } else if(k%4==3) { cout<<(int(x)/100)%10; } else if(k%4==0) { cout<<(int(x)/10)%10; } else if(k%4==1) { cout<<int(x)%10; } } return 0; }

i wrote that

/notes

I don't know what is fstream and broken text

broken text is a text file where the number is saved, fstream is the same as cin/cout just for files instead of console. you can use python to create broken.txt just type: with open("broken.txt", "w") as fstr: for n in range(1, 5001): fstr.write(str(n))

broken text is a text file where the number is saved, fstream is the same as cin/cout just for files instead of console. you can use python to create broken.txt just type: with open("broken.txt", "w") as fstr: for n in range(1, 5001): fstr.write(str(n))

👍🏽👍🏽

i'm a new learner😬

why don't you use using namespace std;

you can use it of course, if you write bigger programs sometime it can cause problems to use "using namespace std"

why don't you use using namespace std;

https://www.geeksforgeeks.org/using-namespace-std-considered-bad-practice/amp/

i'm a new learner😬

yeah c++ is very hard to learn for new programmers, if you need more help just ask. Do you know any other programming languages?

yeah c++ is very hard to learn for new programmers, if you need more help just ask. Do you know any other programming languages?

no i don't. i'm student we have to learn c++

And i am also a learner

int n,a=2,i; cin>>n; for(i=1;i<n;i+2) { a+=4; } cout<<a;

does anyone know why this loop doesn't print an output for n=3?

int n,a=2,i; cin>>n; for(i=1;i<n;i+2) { a+=4; } cout<<a;

For next iteration the i becomes 3 ans 3 <3 fails

For next iteration the i becomes 3 ans 3 <3 fails

i know but it must print 6

Use i<=n It will print for 3

i know but it must print 6

It is not printing 6 ?

It is not printing 6 ?

yeah

in my codeblocks and also in online compiler

int n,a=2,i; cin>>n; for(i=1;i<n;i+2) { a+=4; } cout<<a;

i+=2

i+=2

aaaah thank you😂🤦🏽‍♂️

trouble mistake

Anyone have user experience of using the omp.h include file? #include <omp.h>

hello every one any one can tell me what the code for this exercise Exercise 1 : Write a C++ program that reads a character. If the character input is a space, print a message specifying it. If the character input is a digit, print a message specifying it. its home work for my brother and he so sick i’ve try to understand but i can’t so please help me

hello ... any one ?

hello every one any one can tell me what the code for this exercise Exercise 1 : Write a C++ program that reads a character. If the character input is a space, print a message specifying it. If the character input is a digit, print a message specifying it. its home work for my brother and he so sick i’ve try to understand but i can’t so please help me

use getch and if

use getch and if

isn't getch non standard?

i would say it is better to use something like fgetc or rather getchar()

isn't getch non standard?

i think. because we can't use #conio.h in our exercises

but he still can use cin>> for input

i think. because we can't use #conio.h in our exercises

well yeah because conio.h is DOS thing isn't it?... if he is using c++ he could use std::cin also

well yeah because conio.h is DOS thing isn't it?... if he is using c++ he could use std::cin also

👍🏽👍🏽

what do you study?

what do you study?

well it's in my bio

well it's in my bio

computer sicence?

computer sicence?

#ot yeah, but let's move into the offtopic group if you want to discuss that

does anyone work with SDL2?

Hello, I am using cmake, and I want to build a library created by linking the same source file compiled with several different macro, how to achieve it?

Hi guys, if anyone familiar with ptrace and you can help me that'd be great. I try to receive a (childs) process registers via ptrace on arm64 machine. The steps are: 1. fork() 2. the tracee (child process) calls ptrace with PTRACE_TRACEME 3. the parent process calls waitpid and checks for SIGTRAP 4. the parent process calls ptrace with PTRACE_GETREGSET and with appropriate and valid arguments. Everything is fine, except the 4th call, in which I receive ESRCH. What can go wrong? Thanks.

Show the code

i would say it is better to use something like fgetc or rather getchar()

std::cin.get() i think

Hello, I am using cmake, and I want to build a library created by linking the same source file compiled with several different macro, how to achieve it?

At last, I use cmake configure_file solve it

hello every one any one can tell me what the code for this exercise Exercise 1 : Write a C++ program that reads a character. If the character input is a space, print a message specifying it. If the character input is a digit, print a message specifying it. its home work for my brother and he so sick i’ve try to understand but i can’t so please help me

look up ascii table on google, a character represents a number and its easy to check numbers

char ch = a

int(ch) will return its ascii number

letters a-z are ascii number 65-122, this is easy to check in c or c++ program

int(ch) will return its ascii number

you don't need to know ascii code you can put the letter between ' '

you don't need to know ascii code you can put the letter between ' '

but how do you check if input is any letter from a-z with yourmethod?

but how do you check if input is any letter from a-z with yourmethod?

if(x>='a' && x<='z'){ }?

if(x>='a' && x<='z'){ }?

++++

if(x>='a' && x<='z'){ }?

i dont think this works but maybe im wrong about it

i dont think this works but maybe im wrong about it

it works

I am forced to use Windows by my work and don't understand some things. On Linux all libs situated in /usr/include directory, on Windows we can store libraries where we want and give paths to compilator or cmake. But another programmer can store required lib in another place, so he cant compile my code by my cmake (or another instructions). How to make independent this moment?

I am forced to use Windows by my work and don't understand some things. On Linux all libs situated in /usr/include directory, on Windows we can store libraries where we want and give paths to compilator or cmake. But another programmer can store required lib in another place, so he cant compile my code by my cmake (or another instructions). How to make independent this moment?

aint sure but docker maybe solves this task

I am forced to use Windows by my work and don't understand some things. On Linux all libs situated in /usr/include directory, on Windows we can store libraries where we want and give paths to compilator or cmake. But another programmer can store required lib in another place, so he cant compile my code by my cmake (or another instructions). How to make independent this moment?

Use vcpkg and cmake, configure that way you will only need to provide path to vcpkg and cmake will resolve the rest, have been working on cross platform project for several years set up in a such a way

I am forced to use Windows by my work and don't understand some things. On Linux all libs situated in /usr/include directory, on Windows we can store libraries where we want and give paths to compilator or cmake. But another programmer can store required lib in another place, so he cant compile my code by my cmake (or another instructions). How to make independent this moment?

vcpkg tries to solve this problem, it also works great with cmake

hm, interesting, ty

Hello! Might you help me please? I want to include libraries with the extension *.dll to the project. I found that it is possible to include libraries with the extension *.lib to the project like this: #pragma comment(lib,"MyDll.lib") How could I do something like this for the *.dll-files?

Hello! Might you help me please? I want to include libraries with the extension *.dll to the project. I found that it is possible to include libraries with the extension *.lib to the project like this: #pragma comment(lib,"MyDll.lib") How could I do something like this for the *.dll-files?

how do you build your program? Do you use C Make or visual studio?

how do you build your program? Do you use C Make or visual studio?

I'm using Visual Studio

I'm using Visual Studio

Im not too familiar with VS, I think I remember there is a way to add it from GUI but maybe someone else can help you more specifically

Im not too familiar with VS, I think I remember there is a way to add it from GUI but maybe someone else can help you more specifically

Thank you! I shall try to look in GUI

Am new here

Am new here

okay, great, but you don't have to broadcast that to everyone, thanks

okay, great, but you don't have to broadcast that to everyone, thanks

Okay sorry for that

Okay sorry for that

thank you. It would be very unfortunate if all 16k members started sending such messages, I hope you understand

thank you. It would be very unfortunate if all 16k members started sending such messages, I hope you understand

I understand Thanks for the correction

/get cppbooks

/get cppebooks

/get cppbookguide

Go to screen text and screen background respectively and change the colors to your choice

Thank you

do anyone have chegg account ?

/get cppbookguide

#include <iostream> #include <vector> #include <ctime> #include <cstdlib> using namespace std; void intro(); int main() { intro(); vector<int>vect; vector<int>nonRepeat; int size; int num; int min = 1, max = 10; int val; cout<<"\t\tEnter the size of the vector: "; cin>>size; cout<<endl; unsigned seed = time(0); srand(seed); for(int count = 0; count < size; count++) { num = (rand() % (max - min +1)) + min; vect.push_back(num); } cout<<"\t\tHere are the numbers\n"; cout<<endl; for( int count = 0; count < size; count++) { cout<<"\t\tNum #"<<count + 1<<" = "<<vect[count]<<endl; } return 0; } void intro() { cout<<"\t\tThis is a c++ program\n"; cout<<"\t\t----------------------------\n"; cout<<endl; }

#include <iostream> #include <vector> #include <ctime> #include <cstdlib> using namespace std; void intro(); int main() { intro(); vector<int>vect; vector<int>nonRepeat; int size; int num; int min = 1, max = 10; int val; cout<<"\t\tEnter the size of the vector: "; cin>>size; cout<<endl; unsigned seed = time(0); srand(seed); for(int count = 0; count < size; count++) { num = (rand() % (max - min +1)) + min; vect.push_back(num); } cout<<"\t\tHere are the numbers\n"; cout<<endl; for( int count = 0; count < size; count++) { cout<<"\t\tNum #"<<count + 1<<" = "<<vect[count]<<endl; } return 0; } void intro() { cout<<"\t\tThis is a c++ program\n"; cout<<"\t\t----------------------------\n"; cout<<endl; }

pls how do I rewrite the above program such that there will be no repeating random numbers

pls how do I rewrite the above program such that there will be no repeating random numbers

do you get the same random numbers all the time?

no but some are repeated

i see

I think the most easy way is to go through vect, check if the new number is already exists, and regenerate it if it does

I think the most easy way is to go through vect, check if the new number is already exists, and regenerate it if it does

How do I implement it?

Or you can try to store directly to the array without random and then get it through the array subscript