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  1. #include <thread>
  2. #include <iostream>
  3. using namespace std;
  4.  
  5. volatile bool flag = false;
  6. class ctest{
  7.     size_t cnt;
  8.     public:
  9.     ctest(size_t cnt = 0){
  10.         this->cnt = cnt;
  11.     }
  12.     void inc(){
  13.         cnt++;
  14.     }
  15.     void dec(){
  16.         cnt--;
  17.     }
  18.     size_t count(){
  19.         return cnt;
  20.     }
  21.     static void thread_proc(void * param){
  22.         ctest * pthis = (ctest *)param;
  23.         if( pthis != 0 )
  24.         {
  25.             pthis->inc();
  26.             flag = false;
  27.         }
  28.     }
  29. };
  30.  
  31. int main(){
  32.     ctest  p;
  33.     thread t(ctest::thread_proc, &p);
  34.     flag = true; 
  35.     t.detach();
  36.     while( flag ){
  37.     	//cout<<"\rwait"<<endl;
  38.     }
  39.     cout<<p.count()<<endl;
  40.     return 0;
  41. }
Success #stdin #stdout 0.01s 11656KB
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https://ideone.com/dWauXO
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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