我的复制构造函数导致使用我的类的方法失败。 有人可以看一下，然后告诉我我做错了什么吗？

Question

My constructor creates a copy just fine - but when a method takes an IntegerNumber as an argument, it stops working.

My constructor:

IntegerNumber::IntegerNumber(const IntegerNumber &integerInput){
//Creates a copy of an Integer Number
//Set len and isNegative
len = integerInput.len; 
isNegative = integerInput.isNegative;
//Fill integer with IntegerInput
integer = new char[len+1];
for(int i = 0; i <= len; i++)
    integer[i]=integerInput.integer[i];
}

My destructor:

IntegerNumber::~IntegerNumber(){
//Destructs IntegerNumber
delete [] integer;
delete &len;
delete &isNegative;
}

My Class' data members:

private:
    char *integer;
    int len;
    bool isNegative;

Please try and help me figure out what could be wrong with my constructor/destructor such that the program stops but doesnt crash or break?

Answer 1

you dont want this:

delete &len;
delete &isNegative;

deleting instance variables like this is undefined bahaviour so your program can stop

Answer 2

Use std::unique_ptr and other classes to manage memory- always. Dynamic arrays particularly are suited to std::vector<T> . Do not manually manage your memory- you will get ALL THE ERRORS.