Whatever the programmer wants it to be.
Every C program has a main() function.
Into the source program.
A main function must be present in every C program.
if you do not used main function in c program when errors are accrued
That's up to you, but the execution of the program begins with function main.
the main() function,the#include Directive, the variable definition. function prototype, program statements, the function definition,program comments and braces are the components of program in C++
It is not possible. In C, any program must have at least one function to be able to compile and execute properly: the function main()
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.
C programs do not function without functions.
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.
It is the first function that gets called when the program is executed.