How do you link a C++ program to C functions?

Asked by Last Modified  

5 Answers

Learn C++ Language

Follow 0
Answer

Please enter your answer

Sarvachan Verma

Computer Programming

Just include hedears file
Comments
Dislike Bookmark

IT Technical Trainer

If you want to use existing C functions in the C++ program, you can make use of "extern C". The compiler output for both C and C++ would be different. Extern C would give an indication to the C++ compiler to generate compiled output of the respective function in C format.
Comments
Dislike Bookmark

Experienced IT Trainer with 17 years of experience in IT Industry

In order to call a C function from C++ code, you would use the “extern “C”” keyword when declaring the function in C. Then, you would call the function just like you would call any other function. An example will help clarify this: /*this is what the C++ code would look like for the declaration...
read more
In order to call a C function from C++ code, you would use the “extern “C”” keyword when declaring the function in C. Then, you would call the function just like you would call any other function. An example will help clarify this: /*this is what the C++ code would look like for the declaration of the foo function, which is defined somewhere else in C code: */ extern "C" void foo( ); And then to call the function in the C++ code, it would look like this: //the declaration: extern "C" void foo(); void main() { // the function call: foo( ); } read less
Comments
Dislike Bookmark

To call a C function from C++ code, you would use the “extern “C”” keyword when declaring the function in C. Then, you would call the function just like you would call any other function.
Comments
Dislike Bookmark

Software Engineer

In the C++ code you need to declare the C function as extern "C"
Comments
Dislike Bookmark

View 3 more Answers

Related Questions

Is C/C++ language is still important in 2019?
Of course, C language is only the heart of any processor or controller.Because of complexity in C peoples are looking to work on High-level languages like JAVA etc.
Tejas
0 0
7
what is copy constructor?
The copy constructor is a constructor which creates an object by initializing it with an object of the same class, which has been created previously. The copy constructor is used to: Initialize one object...
Hiteshwar
What is polymorphism in C++?
https://vz-3ad30922-ba4.b-cdn.net/22b3f0e4-e072-48b7-9ae6-3d65a6b4ad50/play_480p.mp4
Renu
0 0
5

What is the main difference between returning value of a function and does not return any value of a function in  C. Which is correct void main(void), int main(void), int main(int) , or void main(int) and explain the main difference between int main() and int main(void). 
A function may or may not return a value to the calling function. If the function is returning a value, then you have to mention the data type in the function definition and funtion declaration (like int,...
Mahesh Kondawar
Why c++ introduced reference variable?
C++ references allow you to create a second name for the a variable that you can use to read or modify the original data stored in that variable.
Sunita

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Necessity of Theory and Practical in Computer Science.
Upon studying a subject both theory and practical are important. Usually many schools concentrate more on theory and the marks not on the practical. Other and opposite kind of people prefer practical...

Ganesa M.

0 0
0
Templates
Templates Advantages of templates: Code reuse Allows container classes (e.g. lists, arrays, etc.) to be simply defined without loss of static type checking or run-time efficiency. Allows definition...

Darpan Kumar

1 0
0
Do You Know How Is Size Of Structure Defined?
Size of the structure is defined based on multiplies of bigger data type member in the structure. Example: If a structure contains integer, char, short data type, then size of the Structure will be multiples...

Umasankar Natarajan

0 0
0
Tress And Its Traversal
Depth First Traversals:(a) Inorder (Left, Root, Right) : 4 2 5 1 3(b) Preorder (Root, Left, Right) : 1 2 4 5 3(c) Postorder (Left, Right, Root) : 4 5 2 3 1 Trees are one of the data structures like...

Sunil Yadav

1 0
0
C++ Advanced Course Study With C++11 Features
OOPS(Object Oriented Programming Systems) In C++. Types of Languages 2GL(Basic,Instruction programming to microprocessors/MC), 3GL(COBOL(= EQUALS TO),C++,C,PASCAL,Java,C#) 4GL(HTML,CSS,JSON) Style...

Madhusudan Samantray

1 0
0

Recommended Articles

About C++ Programming Language

Introduction C++ is an excellent programming language and many of the applications are written in C++ language. It has generic, object-oriented & imperative programming features, and also provides facilities for low-level memory manipulation. Successor of C language, it is an OOP (object oriented programming) language...

Read full article >

Why Should you Become an IT Consultant

Information technology consultancy or Information technology consulting is a specialized field in which one can set their focus on providing advisory services to business firms on finding ways to use innovations in information technology to further their business and meet the objectives of the business. Not only does...

Read full article >

Make a Career as a BPO Professional

Business Process outsourcing (BPO) services can be considered as a kind of outsourcing which involves subletting of specific functions associated with any business to a third party service provider. BPO is usually administered as a cost-saving procedure for functions which an organization needs but does not rely upon to...

Read full article >

8 Hottest IT Careers of 2014!

Whether it was the Internet Era of 90s or the Big Data Era of today, Information Technology (IT) has given birth to several lucrative career options for many. Though there will not be a “significant" increase in demand for IT professionals in 2014 as compared to 2013, a “steady” demand for IT professionals is rest assured...

Read full article >

Find CPP Language near you
CPP Language in Bangalore
CPP Language in Delhi
CPP Language in Hyderabad
CPP Language in Pune
CPP Language in Mumbai
CPP Language in Chennai
CPP Language in Kolkata
CPP Language in Noida
CPP Language in Gurgaon
CPP Language in Jaipur

Looking for C++ Language Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you