下面是- (NSString *)stringByExpandingTildeInPathDescription Returns a new string made by expanding the initial component of the receiver to its full path value.Note that this method only works with fi
一,寻址通过变量名 通过内存地址取地址运算符&,用来获得变量的地址.void getAddress() { int var; cout<<"var address is: "<<&var<<endl;}输出结果是:var address is: 0x7ffcf4dd4e14为何这里是