Can I Mix C and C++ Code in the Same Project?

Difference between #include in C/C++ and import in JAVA

Last Updated : 14 Jan, 2021

#include in C/C++: In the case of C language, #include is a standard or user-defined file in a program that tells the preprocessor to insert the internal contents of another file into the source code of the program.

Syntax:

#include<stdio.h>

Program 1:
Below is a C Program to demonstrate the use of #include:

C

// C Program to demonstrate use of #include
#include <stdio.h>

// Header file loads all the
// necessary Input output
// file at beginning only

// Driver Code
int main()
{
    printf("GeeksforGeeks");
    return 0;
}

Output:

GeeksforGeeks

import in Java: In JAVA, the import statement is used to load the entire package or some classes in a package. It is written before the definition of the class and after the package statement(if present).

Syntax:

import java.util.*;

Program 2:
Below is a Java program to demonstrate the use of the import statement:

Java

// Java program to demonstrate use of import
import java.io.*;

// import statement doesn't load
// all the necessary files at
// beginning rather it loads
// only those files which it
// needs at the runtime
class GFG {
    public static void main(String[] args)
    {
        System.out.println("GeeksforGeeks");
    }
}

Output:

GeeksforGeeks

Both #include in C/C++ and import in Java is used to load predefined header files or packages but there are certain differences which are listed below:

S No.	#include in C/C++	import in Java
1	It is mandatory to use the #include statement to include standard header files.	Import statement in java is optional
2	It loads the file at the beginning only.	No class files will be loaded at the beginning. Whenever a particular class is used then only the corresponding class file will be loaded.
3	Unnecessary waste of memory and processor's time.	No such waste of memory and processor's time.
4	Size of the program increases.	No increase in the size of the program.
5	It is also called as static include.	It is also called as dynamic include.

Can I Mix C and C++ Code in the Same Project?

D

deepakkumar737373

Improve

Article Tags :

Practice Tags :

Similar Reads

Difference Between .cc and .cpp File Extensions in C++

In C++, we use different file extensions to store our code. Two of the most common extensions are .cc and .cpp both store C++ codes. Although they both are used for the same purpose yet there are some differences between them. In this article, we will learn the key differences between the .cc and .c

Difference between cout and puts() in C++ with Examples

Standard Output Stream(cout): The C++ cout statement is the instance of the ostream class. It is used to display output on the standard output device which is usually the display screen. The data needed to be displayed on the screen is inserted in the standard output stream (cout) using the insertio

Difference Between gcc and g++

The GNU Compiler Collection, abbreviated as GCC provides multiple compilers to compile source codes of different programming languages, mainly C and C++. In its command line interface, it provides two commands "gcc" and "g++" which are used to invoke the compiler to compile the given source code to

Can I Mix C and C++ Code in the Same Project?

C and C++ both are very popular programming languages. There can be many situations when you might have to export some functionalities that are written in C programming language into your C++ code. Now the biggest question arises while making any project in C and C++ is that- "Can we Mix C and C++ C

How Do I Use 'extern' to Share Variables Between Source Files?

In C++, extern is a keyword that helps in sharing variables, and functions declared in one file to all the other files. In this article, we will learn how we can use the extern keyword to share variables between source files in C++. How to Use Extern Keyword in C++The extern keyword in C++ extends t

Creating a C++ reusable Header File and its Implementation Files

Reusability is one of the most important concepts of Software Engineering. Reusability means developing code that can be reused either in the same program or in different programs. C++ allows reusability through inheritance, containership, polymorphism, and genericity. But, there is another way to d

Comparing Python with C and C++

In the following article, we will compare the 3 most used coding languages from a beginner's perspective. It will help you to learn basics of all the 3 languages together while saving your time and will also help you to inter shift from one language you know to the other which you don't. Let's discu

Runtime and Compile-time constants in C++

Run-time Constant: These are the constants whose respective values can only be known or computed at the time of running of source code. Run time Constants are a bit slower than compile-time constants but are more flexible than compile-time constants. However, once it is initialized, the value of the

How to Create a Static Library in C++?

C++ allows users to add their own libraries to reduce the amount of code we have to write in our program. A static library in C++ is a library that is linked to the program at compile-time. In this article, we will learn how to create a static library in C++ from scratch. Create Static Library in C+

String to Integer in Different Programming Languages

Below are example programs to do string to integer conversion in different programming languages.C++#include <bits/stdc++.h> using namespace std; int main() { int val; char strn1[] = "12546"; val = atoi(strn1); cout << "String value = " << strn1 << endl; cout << "Intege