class program_t { public: program_t() : m_state(std::make_unique<init_t>()) {} // ... 其他代码 void counting_finished() { assert(m_state->type == running_t::id); auto state = static_cast<running_t*>(m_state.get()); m_state = std::make_unique<finished_t>(state->...
/*function pointer example in c.*/ #include <stdio.h> //function: sum, will return sum of two //integer numbers int addTwoNumbers(int x, int y) { return x + y; } int main() { int a, b, sum; //function pointer declaration int (*ptr_sum)(int, int); //function ...
Java Reflection Example Bit Manipulation Interview Questions and Answers XOR in Java Java Inner Class Example When to use inner classes in Java Inner vs nested class Java Anonymous Class Example Anonymous Class Interface Argument Defined Anonymous Inner Class C/C++ Introduction Function Overloading How...
In this blog, you will learn about functions in C programming, including their definition, types, and how to use them to make your code more modular and efficient.
We will see a few examples to understand the recursive function in C programming: Example 1: Factorial of the number using the recursive function in C. The Factorial of the number N is the multiplication of natural numbers q to N. Factorial( N ) = 1 * 2 * 3 * ….. * N-1 * ...
For instance, in order to use mathematical functions such as sqrt() and abs(), we need to include the header file cmath. Example 5: C++ Program to Find the Square Root of a Number #include <iostream> #include <cmath> using namespace std; int main() { double number, squareRoot; nu...
In the above example, we have passed the address of each array element one by one using afor loop in C. However you can also pass an entire array to a function like this: Note: The array name itself is the address of first element of that array. For example if array name is arr ...
【Example】C++ 回调函数及 std::function 与 std::bind 【Example】C++ 运算符重载 【Example】C++ 标准库智能指针 unique_ptr 与 shared_ptr 【Example】C++ 接口(抽象类)概念讲解及例子演示 【Example】C++ 虚基类与虚继承 (菱形继承问题) 【Example】C++ Template (模板)概念讲解及编译避坑 【Example】C++ ...
In this example, friendFunction is declared a friend of the MyClass class and can access its private member, privateData. By using ‘friend,’ the compiler recognizes the keyword and knows that the function is a friend function in a C++ program. What is a Friend Class in C++? Friend clas...
Learn how to call the main function in a C program with this comprehensive guide, including examples and best practices.