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C Articles
Page 96 of 96
Difference between const char* p, char * const p, and const char * const p in C
In C programming, *p represents the value stored at the address a pointer points to, and p represents the address itself. The const keyword can be applied to the char value, the pointer, or both. The thumb rule is to read declarations from right to left. The Three Declarations Declaration Read Right-to-Left Change Value (*p)? Change Pointer (p)? const char *p p is a pointer to a constant char No Yes char * const p p is a constant pointer to a char Yes No const char * const p ...
Read MoreDifference between const int*, const int * const, and int const * in C
In C programming, *p represents the value stored at the address a pointer points to, and p represents the address itself. The const keyword can be applied to either the pointer, the value it points to, or both, creating different levels of immutability. The thumb rule for reading these declarations is to read from right to left. The Three Declarations Declaration Read Right-to-Left Change Value (*p)? Change Pointer (p)? const int *p p is a pointer to a constant int No Yes int const *p p is a pointer to a ...
Read MoreHow to wrap python object in C/C++?
To wrap existing C or C++ functionality in Python, there are number of options available, which are: Manual wrapping using PyMethodDef and Py_InitModule, SWIG, Pyrex, ctypes, SIP, Boost.Python, and pybind1. Using the SWIG Module Let’s take a C function and then tune it to python using SWIG. The SWIG stands for “Simple Wrapper Interface Generator”, and it is capable of wrapping C in a large variety of languages like python, PHP, TCL etc. Example Consider simple factorial function fact() in example.c file. /* File : example.c */ #include // calculate factorial int fact(int n) { ...
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