C + + Class object pointer differences

classtest{ Public:    intA; Test () {a=1; }};intmain1 () {Test* T1 =NewTest (); T1->a =Ten; Test* T2 =NewTest (); T2->a =5; T2=T1;//t2 original value is lost, and T1 points to the same place, T1->a =111The //t2->a also became 111 because it pointed to the same place T2->a =222; //t1->a also becomes 222, because it points to the same place  }intmain2 () {Test T1; t1.a=Ten;      Test T2; t2.a=5; T2=T1; T1 T2 A want to wait, the T1 copied a copy of the t1.a=111; Does not affect the value of T2 t2.a=222; Does not affect the value of T1}

C + + Class object pointer differences