1. In C language, you cannot compile a source-file if it has two (or more) functions with the same name.
2. You cannot link a program if it has two (or more) global (ie: non-static) functions with the same name.
i think it depends upown the programmer.
One.
If you declare a variable inside of any fuction (except main) it will not be available to other functions.
Every C plus plus program that is a main program must have the function 'main'.
In C and C++, as well as in many (all?) languages, a function can be called from more than one place in a program. That's the purpose of functions - to encapsulate pieces of code that are needed in more than one place in the program.
There is no such thing. You probably meant the main function. The main function is the only function that is required as it serves as the entry point of the program.
Functions allow you to break down large and complex problems into smaller, more easily managed problems, thus exposing the logic behind the solution, making your code easier to read (with little or no commentary), as well as greatly reducing the necessity to duplicate code, thus making code much easier to maintain.
One.
The main program is itself just a function. Its only purpose is to serve as the entry point of the application. All other functions, whether built-in or user-defined, are just ordinary functions that can be called at any time so long as they are within the scope of the caller.
If you declare a variable inside of any fuction (except main) it will not be available to other functions.
Every C plus plus program that is a main program must have the function 'main'.
Functions are very important in C++, as you can't write the simplest program to print hello without using a function. Overall you can say that function are building blocks of a C++ program. Functions can also be defined by the programmer to reduce program size.
In C and C++, as well as in many (all?) languages, a function can be called from more than one place in a program. That's the purpose of functions - to encapsulate pieces of code that are needed in more than one place in the program.
It should work without any special action.
It is the first function that gets called when the program is executed.
You don't write programs in a class in C++, you write programs that use classes. Every C++ has at least one function, main, the entry point of the application. You define the classes and functions that are used by your main function. Classes allow you to classify the objects used by your program, allowing data to be manipulated in a highly controlled manner, ensuring consistency and robustness throughout your program.
#include int main (void) { puts ("1 2 3"); }
I don't think its possible. Every C++ program must at least have the main function.
There is no such thing. You probably meant the main function. The main function is the only function that is required as it serves as the entry point of the program.