Define multi file program, C/C++ Programming

Assignment Help:

Define Multi File Program?

While writing large programs we must divide programs up into modules. These would be separate source files and the main() function would be in one file main.c say the other files will contain functions. This is especially true of programs that make use of lengthy functions, where each function may take up a separate file. Or, if there are many small related functions within a program, it may be desirable to place a few functions within every of several files. The individual files will be compiled alone and then linked together to form one executable object program. This facilitates the debugging and editing of the program, ever since each file can be maintained at a manageable size.

Where a function is spread over numerous files every file will contain one or more functions. One file will include main while the others will hold functions which are called by others. These other files are able to be treated as a library of functions. Programmers generally start designing a program by dividing the problem into simply managed sections. Each one of these sections might be implemented as one or more functions and all functions from each section will typically live in a single file. Where the file holds the definition of functions which return values there is a further limitation on calling these functions from another file. Except functions in another file are told about the function definitions and they will be unable to compile them correctly. The most excellent solution to this problem is to write a header file for each of the C files. This will contain the same name as the C file, but ending in .h. The header file holds definitions of all the functions used in the C file.

when a function in another file calls a function from our C file it is able to define the function by making a #include of the appropriate .h file.

mainfile.c

sum_func.h

showresult.h

# include

# include

# include

main()

{

            int a=3,b=5;

            sum(a,b);

}

# include

int sum(int x,int y)

{

            int sum;

            sum=x+y;

            show(sum);

}

void show(int value)

{

            printf("sum is = %d",value);

            getch();

}

In the above program two functions are stored in showresult.h and sum_func.h and main() function is saved in mainfile.c. Throughout preprocessing phase# include and # include copy the whole content of the corresponding header files into the mainfile.c.


Related Discussions:- Define multi file program

Explain multiple inheritance, Multiple Inheritance Multiple inheritance ,...

Multiple Inheritance Multiple inheritance , as the name suggests , is  deriving a class from more than one class . The derived class inherits all the properties of all its base c

Accounts, Write a program to process bank accounts. Create a base class na...

Write a program to process bank accounts. Create a base class named Account and two derived classes named Savings and Checking. In the base class, use an int AccountNum and a dou

Define a structure of student class, Define a structure of student class:  ...

Define a structure of student class:  Write a program to define a structure of student record in C. class student { char name[20]; int roll_no; int marks[2];

Least coast method, Find out initial basic feasible solution for the given ...

Find out initial basic feasible solution for the given transportation problem using Least Cost Method (LCM).

Decodethecode, 6999066263304447777077766622337778 -----> message sent by th...

6999066263304447777077766622337778 -----> message sent by the first smuggler. my name is robert---------> message decoded by the second smuggler. Where ‘0’ denotes the "space".

Microprocessors and motherboards, The heart of the modern electronic system...

The heart of the modern electronic system is the microprocessor e.g. the video, sound, game consoles, portable phones and domestic appliances. Let us consider the heart of a home c

Program Assignment #3, Programming Assignment #3: Vehicle Track Performance...

Programming Assignment #3: Vehicle Track Performance Tests Purpose: The purpose of this programming assignment is to give the student experience in using functions, arrays, and str

Calculate the average assignment grade, 1. The main program must be in a fi...

1. The main program must be in a file called A4.cpp 2. The data must be read in from a data file.  The user must enter the filename.  A sample data file will be provided on Mood

How do you know that your class requires virtual destructor, How do you kn...

How do you know that your class requires a virtual destructor? A: If at least your class has one virtual function, you must make a destructor for this class virtual. It will let

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd