Tech Differences

There is a close relationship between array and pointer. The pointer can be used to access the array elements, accessing the whole array using pointer arithmetic, makes the accessing faster. There is a basic difference between a pointer and an array that is, an array is a collection of variables of similar data type whereas the pointer is a variable that stores the address of another variable. There are some other differences between an array and a pointer which are discussed below in the … [Read more...]

In C++ and Java, the iteration statements, for loop, while loop and do-while loop, allow the set of instructions to be repeatedly executed, till the condition is true and terminates as soon as the condition becomes false. Conditions in iteration statements may be predefined as in for loop or open-ended as in while loop. There are some major differences between for and while loops, which are explained further with the help of comparison chart. Content: for Vs while Comparison Chart … [Read more...]

Iteration statements allow the set of instructions to execute repeatedly till the condition doesn't turn out false. The Iteration statements in C++ and Java are, for loop, while loop and do while loop. These statements are commonly called loops. Here, the main difference between a while loop and do while loop is that while loop check condition before iteration of the loop, whereas do-while loop, checks the condition after the execution of the statements inside the loop. In this article, we … [Read more...]

The virtual function and pure virtual function both are the concepts of run time polymorphism. Polymorphism is supported by both the languages C++ and Java. In Java, the term "overriding" is used instead of 'virtual function', as the virtual function is the term of C++. The main difference between 'virtual function' and 'pure virtual function' is that 'virtual function' has its definition in the base class and also the inheriting derived classes redefine it. The pure virtual function has no … [Read more...]

In C++ and Java, there are two ways to call a function or a method. The first is "call by value" and the second is "call by reference". Call by value method passes only the value of a variable to the function code, and if there is any change in the value of a variable inside that function it does not affect the original value of that variable. In call by reference method, we pass the variable itself in an argument, and the change in the value of a variable also affects the original value of that … [Read more...]

An array is a collection of variables that are of similar data types and are referred by a common name. A specific element in an array is accessed by a particular index of that array. Arrays in Java work differently as compared to C++. The main topic of our discussion is the difference between One-dimension and Two-Dimension array. A one-dimensional array is a list of variables with the same datatype, whereas the two-Dimensional array is 'array of arrays' having similar data types. C++ do not … [Read more...]

Both "break" and "continue" are the 'jump' statements, that transfer control of the program to another part of the program. C++ supports four jump statements namely  'return', 'goto', 'break' and 'continue'. Java supports three jump statements 'break' 'continue' and 'return'. The main difference between break and continue is that break is used for immediate termination of loop whereas, continue terminate current iteration and resumes the control to the next iteration of the loop. Let's study the … [Read more...]

The two terms "type casting" and "type conversion" occur when there is a need to convert one data type to another. When the two types are compatible with each other, then the conversion of one type to other is done automatically by the compiler. However there is a basic difference between type conversion and type casting i.e. type conversion is done "automatically" by compiler whereas, type casting is to be "explicitly done" by the programmer. Let's discuss the difference both type casting and … [Read more...]

Association of a 'function definition' to a 'function call' or an association of a 'value' to a 'variable', is called 'binding'. During compilation, every 'function definition' is given a memory address; as soon as function calling is done, control of program execution moves to that memory address and get the function code stored at that location executed, this is binding of 'function call'  to 'function definition'. Binding can be classified as 'static binding' and 'dynamic binding'. If it's … [Read more...]

As we discussed earlier, a variable is a name, given to a memory location and it must be declared before it is used. In C, all the variables are declared at the starting of the program. In C++, variables can be declared, at any point of time, before they are used in the instructions. Variables are further classified into 'local' and 'global' variable, which is the main topic of our discussion. Here the main difference between a local and a global variable is that, a local variable is declared … [Read more...]