string sum_numbers(string a, string b) {
        char ca, cb, ci, out, co = '0';
        string result = "";
        while (a.size() > 0 || b.size() > 0 || co != '0') {
            ci = co; ca = '0'; cb = '0';
            if (a.size() > 0) {ca = a.back(); a.pop_back();}
            if (b.size() > 0) {cb = b.back(); b.pop_back();}
            result = ((((ca != cb) ? '1' : '0') != ci) ? '1' : '0') + result;
            co = ((((ca == '1' && cb == '1') ? '1' : '0') == '1' || 
                 ((((ca != cb) ? '1' : '0') == '1' && ci == '1') ? '1' : '0') == '1') ? '1' : '0');
        }
        return result;
    }

Scary stuff

By Anonymous, 2023-12-01 22:20:27
#include <iostream>
#include <vector>
#include <numeric>
#include <algorithm>
#include <iterator>

constexpr int N = 10;

int main() {
    std::vector<int> even;
    std::vector<int> odd;
    
    even.resize(N);
    
    // Fill up the 'even' vector with integers starting from from 1 through 'N'
    std::iota(even.begin(), even.end(), 1);

    // Segregate the odd and even integers from each other
    
    for (auto it = even.begin(); it != even.end(); ++it)
        if (*it % 2 != 0) {
            // If the number is odd, put it in the 'odd' vector
            odd.push_back(*it);
            // Remove the number from the even vector
            even.erase(it);
        }

    // Print the result
    
    std::cout << "Even numbers: ";
    std::copy(even.begin(), even.end(), std::ostream_iterator<int>(std::cout, " "));

    std::cout << "\nOdd numbers: ";
    std::copy(odd.begin(), odd.end(), std::ostream_iterator<int>(std::cout, " "));

    std::cout << '\n';
}

Seems fine to me... C++ couldn't possibly be THAT evil to introduce another nuanced and verbose complexity in there, right?

By cufbox, 2023-12-15 09:38:58
int var = 0;
int* ptr = &var;
ptr[0] = 5;
std::cout << ptr[0];
By Anonymous, 2015-07-24 23:51:35
int main() {
    int error_code = some_function();
    if (error_code == 1) {
        // In case of error, crash the program by eating up memory
        while (true) new int;
    }
}
By Anonymous, 2024-04-30 08:31:39
void winner(int score[4])
{
    
    if (score[0] > score[1] > score[2] > score[3])
        cout << "The winner is the Player 1 with " << score[0] << " points.";
    else if (score[1] > score[0] > score[2] > score[3])
        cout << "The winner is the Player 2 with " << score[1] << " points.";
    else if (score[2] > score[0] > score[1] > score[3])
        cout << "The winner is the Player 3 with " << score[2] << " points.";
    else if (score[3] > score[2] > score[1] > score[0])
        cout << "The winner is the Player 4 with " << score[3] << " points.";
}
By Anonymous, 2020-05-17 16:06:24
  if(!Hardware::initialize()) {
    Serial.println("Hardware initialization failed!");
    for(;;){}
  }

  if(!UI.begin()) {
    Serial.println("SSD1306 allocation failed");
    for(;;){}
  }

For is best ever, why even bother with While, or even Return... Source of code: https://github.com/MausTec/nogasm-wifi/blob/master/ESP32_WiFi.ino

By Anonymous, 2020-11-22 20:05:34
if(!strncmp(pcTagName,strlim,(int)strlen(strlim))) return "";
By Anonymous, 2021-06-08 19:32:50
if ((&inactiveSlot)->GetFirstSlot() == RuntimeLib::INVALID_SLOT) {

Dot dude...

By 314, 2020-05-07 10:56:22
auto settingsFileSize = static_cast<int>(sizeof(_settings));

This was in release branch for a month. Casting wasn't even necessary.

By Your favourite co-worker., 2019-06-04 09:05:15
double zuida(std::vector<double> vec) {
	std::vector<double> temp;
	for(int i = 0; i < vec.size(); i++)
		temp.push_back(vec[i]);
notend:
	if(temp.size() > 0) {
		if(temp.size() < 2) {
			double tmp = *(&temp[0]);
			return tmp;
		}
		else if(temp.size() >= 2) {
			double mini = temp[0];
			int ind = 0;
			for(int i = 0; i < temp.size(); i++)
				if(temp[i] < mini) {
					mini = temp[i];
					ind = i;
				}
			temp.erase(temp.begin() + ind);
			goto notend;
		}
	}
}

The beauty is that every case is the best (also worst) case!

By Anonymous, 2019-10-12 10:42:23
void MagicUnit::getSomeVoltage(std::uint64_t w_data, double &val)
{
    std::uint64_t r_data = 0;
    hwRead((int)Address::Voltage, 3, w_data, 2, &r_data);
    val = r_data;
    val /= 16; // shit right 4 bits
    val *= 0.004;
    val -= 8.192;
}
By Anonymous, 2019-03-11 08:43:52
  ierr = pxmlIn->GetData(pcTag, *pTData);
  *pbDataValid = bool((ierr==0)&&(iLen>0));  // enabled if: not empty string and vaild (number?)
  if (*pbDataValid)  iErr += ierr;
By Anonymous, 2020-04-07 14:44:12
#53 C++ +13
int chromosome::getScore()
{
    return this->getScore();
}
By Anonymous, 2015-11-05 15:41:39
for (int i = 0;i < n / 2;i++)
    {
        while (num[a[p].id].n == 0 || num[num[a[p].id].nxt].n == 0)
        {
            p++;
        }
        printf("%d %d ", num[a[p].id].n, num[num[a[p].id].nxt].n);
        num[a[p].id].n = 0;
        num[num[a[p].id].nxt].n = 0;
        num[num[a[p].id].lst].nxt = num[num[a[p].id].nxt].nxt;
        num[num[num[a[p].id].nxt].nxt].lst = num[a[p].id].lst;
    }
By Anonymous, 2022-08-06 14:50:56
#define private public
#define protected public
#define class struct

#include "your_private_parts.hpp"
// ...

#undef class
#undef protected
#undef private

// ...

Fails miserably if template <class>, template <template <class> class> or their variations are found anywhere inside your header. :(

By 2 + 2 = 3.99999999999999999999999999999999999, 2021-11-08 07:59:05