What is easier to learn C or C++?
Answers: Actually, both are difficult and both are easy. C++ is built upon C and thus supports all features of C and also, it has object-oriented programming features. When it comes to learning, size-wise C is smaller with few concepts to learn while C++ is vast. Hence we can say C is easier than C++.
Why does C still exist?
C programmers do. The C programming language doesn’t seem to have an expiration date. It’s closeness to the hardware, great portability and deterministic usage of resources makes it ideal for low level development for such things as operating system kernels and embedded software.
Can I call a C function from a C++ library?
Just be sure that any C function you call uses C linkage. This is made by enclosing the prototype of the C function by an extern “C” The headers for the library you are trying to use may already do that. Sure C code is called from C++ all the time. For instance, most OS libraries are written in C rather than C++.
How to specify C-linkage for C-library functions?
Also remember to use extern “C” to specify C-linkage for the C-library functions if the header files have not already declared them as such. Keep in mind that some libraries may not have declared their functions specifically using extern “C”, but may have used a pre-processor token to-do so.
Is it possible to use C++ with OS libraries?
For instance, most OS libraries are written in C rather than C++. So whenever you’re making syscalls from your C++ code to perform tasks that are handed over to the OS kernel, those are going through C-code calls. Just be sure to include the proper headers and link against the C-libraries in question at compile time.
Can C++ compile C with a C++ compiler?
Yes, C++ can compile C with a C++ compiler and you can link C++ against C. Just be sure that any C function you call uses C linkage. This is made by enclosing the prototype of the C function by an extern “C” The headers for the library you are trying to use may already do that.