-2 int() is the constructor of class int. It will initialise your variable a to the default value of an integer, i.e. 0. Even if you don't call the constructor explicitly, the default constructor, i.e. int() , is implicitly called to initialise the variable. Otherwise there will be a garbage value in the variable.
That second memory address, then, is expected to hold an int. Do note that, while you are declaring a pointer to an int, the actual int is not allocated. So it is valid to say int *i = 23, which is saying "I have a variable and I want it to point to memory address 23 which will contain an int."
int array[] = new int[10]; ? Both do work, and the result is exactly the same. Which one is quicker or better? Is there a style guide which recommends one?
int a = 5; int& b = a; b = 7; cout << a; prints out 7, and replacing int& b with int &b also prints out 7. In fact so does int&b and int & b. I tested this kind of behavior with a simple class as well. In general, does it ever matter whether the ampersand is placed relative to the type and identifier? Thanks.
int is a primitive data type while Integer is a Reference or Wrapper Type (Class) in Java. after java 1.5 which introduce the concept of autoboxing and unboxing you can initialize both int or Integer like this.
In C#, int and Int32 appear to be the same thing, but I've read a number of times that int is preferred over Int32 with no reason given. Are the two really the same? Is there a reason where one sho...
7 c is a double variable, but the value being assigned to it is an int value because it results from the division of two int s, which gives you "integer division" (dropping the remainder). So what happens in the line c=a/b is a/b is evaluated, creating a temporary of type int the value of the temporary is assigned to c after conversion to type ...
In Java, the 'int' type is a primitive, whereas the 'Integer' type is an object. In C#, the 'int' type is the same as System.Int32 and is a value type (ie more like the java 'int'). An integer (just like any other value types) can be boxed ("wrapped") into an object.
