How do you link a C++ program to C functions?
- 4 Answers
- 16439 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / ravindranath m
The C++ compiler does something called as "name mangling"
for functions, while a C compiler does not. Name mangling
is a process wherein the name of the original function in a
c++ program gets changed to a new name via adding some
prefix and/or postfix to it.
As a result, a c program cannot find the required definition
when trying to link to a cpp object file.
This can be resolved by putting the following declaration in
a c++ header file that contains the cpp function declarations.
#ifdef __cplusplus
extern "C" {
#endif
// function declarations go here...
// ...
#ifdef __cplusplus
}
#endif
| Is This Answer Correct ? | 25 Yes | 4 No |
Answer / nikhil upadhyay
By using the extern "C" linkage specification around the C function declarations.
Programmers should know about mangled function names and type-safe linkages. Then they should explain how the extern "C" linkage specification statement turns that feature off during compilation so that the linker properly links function calls to C functions. Another acceptable answer is "I don't know. We never had to do that." Merely describing what a linker does indicates that the programmer does not understand the issue that underlies the question.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / prabakaran
including the header file #include<stdio.h>
| Is This Answer Correct ? | 3 Yes | 20 No |
How do we balance an AVL Tree in C++?
Why can you not make a constructor as const?
Can we change the basic meaning of an operator in c++?
What is a forward referencing and when should it be used?
Why do we need pointers?
How can we read/write Structures from/to data files?
What is the importance of mutable keyword?
What are proxy objects in c++?
What is else if syntax?
Can you help me with this one? Make a program that when a user inputed a Product Name, it will display its price, and when the user inputed the quantity of the inputed product, it will show its total price. The output must be like this: Product Name: Price: Quantity: Total Price: ..this is the list of products to be inputed: Cellphone - 1500 Washing Machine - 5200 Television - 6000 Refrigirator - 8000 Oven - 2000 Computer - 11000 thanks..:D
What is bubble sort c++?
sizeof- is it functioning statically or dynamically?
STL 
