#include <bits/stdc++.h>
int main() {
std::cout<<"hello world";
return 0;
}
<bits/stdc++.h> is an internal header specific to GCC. Since you only use std::cout in your code, you should just #include <iostream> instead
consteval
𝚁𝚒𝚝𝚎𝚜𝚑𝚝𝚑𝚎𝚋𝚎𝚊𝚜𝚝𝚋𝚘𝚢 O_o
consteval
nice
Rohit
Which programming should I choose if I want to earn heavy
Maxim
Which programming should I choose if I want to earn heavy
Offtopic discussions should be done in the C/C++ Offtopic group. Please take your discussion/questions there.
Adrian
/start@MissRose_bot
Adrian
Which library should I use to display something with encoding utf-8 that allows me to use special characters?
#include <?.h>
Ludovic 'Archivist'
Which library should I use to display something with encoding utf-8 that allows me to use special characters?
#include <?.h>
Do you need graphemes that take more than one code point?
Reported Manu [552765840] to admins.
Chat Boss
Igor Kozelskiy sent a code, it has been re-uploaded as a quote
I have a pretty big file of .md type of 139761 lines. My function readlines perfectly reads file of smaller sizes, but when reading this one it finds 139779 lines.
c
#include "strarray.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int readlines(FILE *file, StrArray *lines) {
char buffer[BUFFER_SIZE];
memset(buffer, 0, sizeof buffer);
while (fgets(buffer, sizeof(buffer), file)) {
buffer[strcspn(buffer, "\n")] = 0;
if ((str_array_append(lines, buffer)) < 0) {
str_array_terminate(lines);
return -1;
}
}
return lines->size;
}
int str_array_append(StrArray *array, const char *new_str) {
if (!array || !new_str) {
fprintf(stderr, "add_str: NULL pointer detected\n");
return -1;
}
char **strs_upd =
(char **)realloc(array->array, sizeof(char *) * (array->size + 1));
if (!strs_upd) {
perror("realloc failed");
return -1;
}
strs_upd[array->size] = malloc(strlen(new_str) + 1);
if (!strs_upd[array->size]) {
perror("malloc failed");
return -1;
}
strcpy(strs_upd[array->size], new_str);
array->array = strs_upd;
array->size++;
return array->size;
}
void str_array_terminate(StrArray *array) {
if (!array || !array->array)
return;
for (size_t i = 0; i < array->size; i++)
if (array->array[i])
free(array->array[i]);
free(array->array);
array->array = NULL;
array->size = 0;
}
Igor
No idea why it reads more lines than there're actually in file
klimi
No idea why it reads more lines than there're actually in file
What's your strarray.h
Chat Boss
What's your strarray.h
Igor Kozelskiy sent a code, it has been re-uploaded as a quote
Function declarations
#ifndef STRARR_H
#define STRARR_H
#include <stdlib.h>
#include <stdio.h>
#define BUFFER_SIZE 2048
typedef struct _str_array_
{
char **array;
int size;
} StrArray;
int readlines(FILE *file, StrArray *array);
int str_array_append(StrArray *array, const char *new_string);
int str_array_insert(StrArray *array, size_t position, const char *new_string);
int str_array_drop(StrArray *array, size_t position);
int str_array_drop_range(StrArray *array, size_t start, size_t end);
int str_array_replace(StrArray *array, size_t index, char *replacement);
int str_array_replace_range(StrArray *array, size_t start, size_t end, StrArray *rrange);
void str_array_terminate(StrArray *array);
#endif // !STRARR_H
Never Spam Bot
Igor Kozelskiy is now approved by the group admin and can send messages without any restrictions
Function declarations #ifndef STRARR_H
#define STRARR_H #include <stdlib.h>
#include <stdio.h> #define BUFFER_SIZE 2048 typedef struct _str_array_
{ char **array; int size;
} StrArray; int readlines(FILE *file, StrArray *array); int str_array_append(StrArray *array, const char *new_string); int str_array_insert(StrArray *array, size_t position, const char *new_string); int str_array_drop(StrArray *array, size_t position); int str_array_drop_range(StrArray *array, size_t start, size_t end); int str_array_replace(StrArray *array, size_t index, char *replacement); int str_array_replace_range(StrArray *array, size_t start, size_t end, StrArray *rrange); void str_array_terminate(StrArray *array); #endif // !STRARR_H
See spam? Quote the spam message in the group and reply with /spam
Igor
Well, I found the mistake....
Buffer was too small (2k chars was not enough) to handle lines from the file
Nikhil
Any body need gaming code for c++
Marce
elsahou
no
Ludovic 'Archivist'
/warn English only
User 😊 has 1/2 warnings; be careful!
Reason:
English only
Ludovic 'Archivist'
/warn English only
User Madhav has 1/2 warnings; be careful!
Reason:
English only
User Nikhil has 1/2 warnings; be careful!
Reason:
spam/ad
Nikhil
What
Nikhil
Please remove me
Nikhil
No
Nikhil
I can't
Nikhil
.
Nikhil
.
Rahul
Does anybody can do the coding for my website?
Psych
anyyy senior c programmerssss hereee????
Aze
can the result of an RNG system ever be the same
Aze
like could the result of a crash game be replicated such that it so similar to the results of the game itself
Aze
is there any possibility
Suka
like could the result of a crash game be replicated such that it so similar to the results of the game itself
perhaps you can test your app in virtual machine that support rng dev?
Don
yeah
Sam
Yeah
klimi
/warn repeated ad
User Rahul has 1/2 warnings; be careful!
Reason:
repeated ad
Shruti
Indian?
klimi
Read the rules
Unknown Bot
Emojis are not allowed? :(
klimi
Emojis are not allowed? :(
They are not forbidden. But I don't know how you can use emoji on topic
User Malikzada Ahsan has 1/2 warnings; be careful!
Reason:
homework
Lemuel
Hi am new
Yurri
Hey all
Yurri
Is there any idea how to convert our website into a legal application?
klimi
Is there any idea how to convert our website into a legal application?
Put browser with it and ship it
Fire
Hi am new
Offtopic discussions should be done in the C/C++ Offtopic group. Please take your discussion/questions there.
GPU Governor
Is there any idea how to convert our website into a legal application?
Yeah, that's what tools like electron and tauri is for
GPU Governor
You will write the application with html, css, js. Then bundle it as a web view (web container)
GPU Governor
And since this is a c++ group, i will recommend you use Qt webview
Ludovic 'Archivist'
And since this is a c++ group, i will recommend you use Qt webview
I never used it, is it good? I generally make my web tools using drogon and htmx
GPU Governor
I never used it, is it good? I generally make my web tools using drogon and htmx
On a scale of 10 i will give it a 6.5, i only use qt webview if i want my code base to be in C++ otherwise they are better alternatives like the ones you are already using
Sharan
Any one want projects ping me
Kayathri
Hello I need help in my c++ assignment urgent
Chat Boss
Kayathri Rayan sent a code, it has been re-uploaded as a quote
#include "include/Battlefield.h"
#include "include/BattleShip.h"
#include "include/Cruiser.h"
#include "include/Destroyer.h"
#include "include/Frigate.h"
#include "include/Corvette.h"
#include "include/Amphibious.h"
#include "include/Supership.h"
#include "include/Game_Setup.h"
#include "include/MovingShip.h"
#include "include/RamShip.h"
#include "include/SeeingShip.h"
#include "include/Ship.h"
#include "include/ShootingShip.h"
#include "include/Supership.h"
#include <iostream>
#include <fstream> // For file operations
using namespace std;
int main()
{
ofstream outFile("output.txt"); // Create output file
streambuf* coutbuf = cout.rdbuf(); // Save old buf
cout.rdbuf(outFile.rdbuf()); // Redirect std::cout to output.txt
Battlefield battlefield(15, 15);
cout << "Created battlefield" << std::endl;
battlefield.printBattlefield();
Battleship BattleShip("BattleShip", 1, 1, battlefield, 1);
Cruiser Cruiser("Cruiser", 13, 7, battlefield, 2);
Destroyer Destroyer("Destroyer", 7, 9, battlefield, 3);
Frigate Frigate("Frigate", 5, 11, battlefield, 4);
Corvette Corvette("Corvette", 9, 3, battlefield, 5);
Amphibious Amphibious("Amphibious", 11, 5, battlefield, 6);
Supership Supership("Supership", 5, 6, battlefield, 8);
battlefield.printBattlefield();
for (int step = 0; step < 22; step++) // step
{
cout << "Step " << step << "\n" << endl;
BattleShip.takeTurn();
battlefield.printBattlefield();
Cruiser.takeTurn();
battlefield.printBattlefield();
Destroyer.takeTurn();
battlefield.printBattlefield();
Frigate.takeTurn();
battlefield.printBattlefield();
Corvette.takeTurn();
battlefield.printBattlefield();
Amphibious.takeTurn();
battlefield.printBattlefield();
Supership.takeTurn();
battlefield.printBattlefield();
}
cout << "End of simulation" << endl;
cout.rdbuf(coutbuf); // Reset to standard output again
outFile.close(); // Close output file
return 0;
}
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x87): undefined reference to `Battlefield::Battlefield(int, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0xc1): undefined reference to `Battlefield::printBattlefield() const'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0xf7): undefined reference to `Battleship::Battleship(char const*, int, int, Battlefield&, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x12d): undefined reference to `Cruiser::Cruiser(char const*, int, int, Battlefield&, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x163): undefined reference to `Destroyer::Destroyer(char const*, int, int, Battlefield&, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x199): undefined reference to `Frigate::Frigate(char const*, int, int, Battlefield&, int)'
anyone can help my code has no error but when I run it shows this output I don't know why its not running
Chat Boss
Kayathri Rayan sent a code, it has been re-uploaded as a quote
#include "include/Battlefield.h"
#include "include/BattleShip.h"
#include "include/Cruiser.h"
#include "include/Destroyer.h"
#include "include/Frigate.h"
#include "include/Corvette.h"
#include "include/Amphibious.h"
#include "include/Supership.h"
#include "include/Game_Setup.h"
#include "include/MovingShip.h"
#include "include/RamShip.h"
#include "include/SeeingShip.h"
#include "include/Ship.h"
#include "include/ShootingShip.h"
#include "include/Supership.h"
#include <iostream>
#include <fstream> // For file operations
using namespace std;
int main()
{
ofstream outFile("output.txt"); // Create output file
streambuf* coutbuf = cout.rdbuf(); // Save old buf
cout.rdbuf(outFile.rdbuf()); // Redirect std::cout to output.txt
Battlefield battlefield(15, 15);
cout << "Created battlefield" << std::endl;
battlefield.printBattlefield();
Battleship BattleShip("BattleShip", 1, 1, battlefield, 1);
Cruiser Cruiser("Cruiser", 13, 7, battlefield, 2);
Destroyer Destroyer("Destroyer", 7, 9, battlefield, 3);
Frigate Frigate("Frigate", 5, 11, battlefield, 4);
Corvette Corvette("Corvette", 9, 3, battlefield, 5);
Amphibious Amphibious("Amphibious", 11, 5, battlefield, 6);
Supership Supership("Supership", 5, 6, battlefield, 8);
battlefield.printBattlefield();
for (int step = 0; step < 22; step++) // step
{
cout << "Step " << step << "\n" << endl;
BattleShip.takeTurn();
battlefield.printBattlefield();
Cruiser.takeTurn();
battlefield.printBattlefield();
Destroyer.takeTurn();
battlefield.printBattlefield();
Frigate.takeTurn();
battlefield.printBattlefield();
Corvette.takeTurn();
battlefield.printBattlefield();
Amphibious.takeTurn();
battlefield.printBattlefield();
Supership.takeTurn();
battlefield.printBattlefield();
}
cout << "End of simulation" << endl;
cout.rdbuf(coutbuf); // Reset to standard output again
outFile.close(); // Close output file
return 0;
}
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x87): undefined reference to `Battlefield::Battlefield(int, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0xc1): undefined reference to `Battlefield::printBattlefield() const'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0xf7): undefined reference to `Battleship::Battleship(char const*, int, int, Battlefield&, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x12d): undefined reference to `Cruiser::Cruiser(char const*, int, int, Battlefield&, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x163): undefined reference to `Destroyer::Destroyer(char const*, int, int, Battlefield&, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x199): undefined reference to `Frigate::Frigate(char const*, int, int, Battlefield&, int)'
Chat Boss
Kayathri Rayan sent a code, it has been re-uploaded as a quote
"#include "include/Battlefield.h""
#include "include/BattleShip.h"
#include "include/Cruiser.h"
#include "include/Destroyer.h"
#include "include/Frigate.h"
#include "include/Corvette.h"
#include "include/Amphibious.h"
#include "include/Supership.h"
#include "include/Game_Setup.h"
#include "include/MovingShip.h"
#include "include/RamShip.h"
#include "include/SeeingShip.h"
#include "include/Ship.h"
#include "include/ShootingShip.h"
#include "include/Supership.h"
#include <iostream>
#include <fstream> // For file operations
using namespace std;
int main()
{
ofstream outFile("output.txt"); // Create output file
streambuf* coutbuf = cout.rdbuf(); // Save old buf
cout.rdbuf(outFile.rdbuf()); // Redirect std::cout to output.txt
Battlefield battlefield(15, 15);
cout << "Created battlefield" << std::endl;
battlefield.printBattlefield();
Battleship BattleShip("BattleShip", 1, 1, battlefield, 1);
Cruiser Cruiser("Cruiser", 13, 7, battlefield, 2);
Destroyer Destroyer("Destroyer", 7, 9, battlefield, 3);
Frigate Frigate("Frigate", 5, 11, battlefield, 4);
Corvette Corvette("Corvette", 9, 3, battlefield, 5);
Amphibious Amphibious("Amphibious", 11, 5, battlefield, 6);
Supership Supership("Supership", 5, 6, battlefield, 8);
battlefield.printBattlefield();
for (int step = 0; step < 22; step++) // step
{
cout << "Step " << step << "\n" << endl;
BattleShip.takeTurn();
battlefield.printBattlefield();
Cruiser.takeTurn();
battlefield.printBattlefield();
Destroyer.takeTurn();
battlefield.printBattlefield();
Frigate.takeTurn();
battlefield.printBattlefield();
Corvette.takeTurn();
battlefield.printBattlefield();
Amphibious.takeTurn();
battlefield.printBattlefield();
Supership.takeTurn();
battlefield.printBattlefield();
}
cout << "End of simulation" << endl;
cout.rdbuf(coutbuf); // Reset to standard output again
outFile.close(); // Close output file
return 0;
}
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x87): undefined reference to `Battlefield::Battlefield(int, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0xc1): undefined reference to `Battlefield::printBattlefield() const'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0xf7): undefined reference to `Battleship::Battleship(char const*, int, int, Battlefield&, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x12d): undefined reference to `Cruiser::Cruiser(char const*, int, int, Battlefield&, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x163): undefined reference to `Destroyer::Destroyer(char const*, int, int, Battlefield&, int)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\USER\AppData\Local\Temp\ccKhsmA6.o:main.cpp:(.text+0x199): undefined reference to `Frigate::Frigate(char const*, int, int, Battlefield&, int)'
Never Spam Bot
Kayathri Rayan sent multiple messages that looks like a spam.
Why was my message deleted?
Spam deleted in this group: 3181
Anshul
Do we have any such group for python(and other programming languages) as well?