Creating a simplistic case of data race in C++

data_race.cpp

#include <thread>
#include <stdio.h>

int count = 0;

void counter(){
    for (int i=0; i < 100000; ++i){
        count++;
    }
}

int main(){
    std::thread counter1(counter);
    std::thread counter2(counter);
    counter1.join();
    counter2.join();
    printf("Final count is %d\n", count);
}

Compile: g++ -Wall -std=c++11 data_race.cpp -o data_race.o
Run: ./data_race.o