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  1. #include <iostream>
  2. #include <vector>
  3. #include <cstring>
  4. using namespace std;
  5.  
  6. class A
  7. {
  8. public:
  9.     A(const char *str)
  10.     {
  11.         cptr = new char [strlen(str)];
  12.         strcpy(cptr,str);
  13.         cout<<"A(const char *str) called and cptr is "<<cptr<<endl;
  14.     }
  15.     A(const A &a)
  16.     {
  17.         cptr = new char [strlen(a.cptr)+1];
  18.         strcpy(this->cptr,a.cptr);
  19.         cout<<"A(const A &a) called and cptr is "<<cptr<<endl;
  20.     }
  21.     ~A()
  22.     {
  23.         cout<<"~A() called and cptr is "<<cptr<<endl;
  24.         delete [] cptr;
  25.     }
  26.  
  27.     char *cptr;
  28. };
  29.  
  30. int main()
  31. {
  32.     A a1("1"),a2("2"),a3("3");
  33.     vector<A> Avec;
  34.     Avec.reserve(256);
  35.  
  36.     Avec.push_back(a1);
  37.     Avec.push_back(a2);
  38.     Avec.push_back(a3);
  39.  
  40.     vector<A>::iterator iter;
  41.     for(iter = Avec.begin(); iter!=Avec.end(); )
  42.     {
  43.         if(strcmp((*iter).cptr,"1") == 0)
  44.         {
  45.             cout<<"before erase"<<endl;
  46.             iter = Avec.erase(iter);
  47.             cout<<"after erase"<<endl;
  48.         }
  49.         else
  50.         {
  51.             ++iter;
  52.         }
  53.     }
  54. }
Success #stdin #stdout 0s 2992KB
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stdin
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Standard input is empty
stdout
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A(const char *str) called and cptr is 1
A(const char *str) called and cptr is 2
A(const char *str) called and cptr is 3
A(const A &a) called and cptr is 1
A(const A &a) called and cptr is 2
A(const A &a) called and cptr is 3
before erase
~A() called and cptr is 3
after erase
~A() called and cptr is 2
~A() called and cptr is 
~A() called and cptr is 3
~A() called and cptr is 2
~A() called and cptr is 1
https://ideone.com/szu4Jh
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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