C++
Introduction In this post, we will write a small C++ Hello World program and discuss the general structure of a C++ program. In C++ the executable unit is called a function. We will use Code:: Blocks IDE to create a C++ project. Launch IDE Launch Code:: Blocks IDE. Incase Code:: Blocks are not installed on […]
Introduction In this post, we will discuss how to do input /output in C++ programs. The iostream library provides the objects for doing input and output. cout is the output stream object for output and the << operator. cin is the input stream object for doing the input and the operator >> double radius=0.0; cout […]
Introduction In this post, we will discuss conditional execution using the if statement in C++programs. If statement in its simplest form has the following syntax as below if(expression) action If the expression is true the action is executed, otherwise the action is not executed. Basic flowchart of the if statement is shown in the picture. […]
Introduction In this post, we will discuss for loop as it is used often in C++ programs. For loop allows you to execute the action for each iteration in the loop. for(for initialization; for expression ; post expression) action action can be a single statement of group of statements nested within curly braces. Flowchart […]
Introduction In this post, we will discuss the iteration using the while loop statement. Using while statement is a simple way to execute a statement or group statements repeatedly in a C++ program. while( expression) action Flowchart Sample program /************************* * C++ while loop demo *************************/ #include <iostream> using namespace std; int main() […]
Introduction In this post, we will discuss the switch statement and its flow in a C++ program. When a switch statement is executed, its expression is evaluated. If the value of the expression equals the case expression the flow is transferred to the action with the matching case expression. Syntax switch(SwitchExpression){ case CaseExpression1: action1 break; […]
Overview In this post, we will write simple C++ programs to read and write files. In order to input and output to a file, we need to use the standard header file ifstream. ifstream/ofstream Suppose if we need an input stream to read values from the file, we can create an ifstream object that uses […]
Introduction In this post, we will see how to display a neat table of values in the C++ program. Displaying a table of data is a very common activity when performing numeric computations. In C++ we can manipulate the I/O stream using iomanip library. #include <iomanip> C++ program /*************************************** *Table of values demo C++ […]
Overview Recursive function is a function that invokes itself. In this post, we will discuss recursion and a sample C++ program that uses a recursive function. Sample program /************************************** * Recursive function demo C++ program ****************************************/ #include <iostream> using namespace std; //Function prototype int Factorial(int); // main Function int main(){ int n; cout << “Enter […]