How can an output be generated from a PHP program without using output functions and statements such as print, printf, and echo?
In a PHP program, everything is written outside the opening and closing tag of PHP is its output.
What is the name and nature of default member variable of a class?
Whenever we define a class in C++ then one variable is automatically defined within that class. The name of that variable is "this" and it is a pointer of same class type.
Whether a function can be defined within a structure of C language program?
Normally structure in a C program only contains variables. But we can also define pointer of a function inside a structure. In this way, a function can be defined within a structure and so structure of a C program can also behave like the class of C++.