Build Simple calculator using Class template
Write a C++ Program to build Simple calculator using Class template. Here’s a Simple C++ Program to build Simple calculator using Class template in C++ Programming Language.
What are Templates in C++ ?
Templates are the foundation of generic programming, which involves writing code in a way that is independent of any particular type.
A template is a blueprint or formula for creating a generic class or a function. The library containers like iterators and algorithms are examples of generic programming and have been developed using template concept.
There is a single definition of each container, such as vector, but we can define many different kinds of vectors for example, vector <int> or vector <string>..
Function Template :
The general form of a template function definition is shown here:
template <class type> ret-type func-name(parameter list)
{
// body of function
}
Class Template :
Just as we can define function templates, we can also define class templates. The general form of a generic class declaration is shown here:
template <class type> class class-name
{
.
.
.
}
Below is the source code for C++ Program to build Simple calculator using Class template which is successfully compiled and run on Windows System to produce desired output as shown below :
SOURCE CODE : :
/* C++ Program to build Simple calculator using Class template */ #include <iostream> using namespace std; template <class T> class Calculator { private: T num1, num2; public: Calculator(T n1, T n2) { num1 = n1; num2 = n2; } void displayResult() { cout << "Numbers are: " << num1 << " and " << num2 << "." << endl; cout << "Addition is: " << add() << endl; cout << "Subtraction is: " << subtract() << endl; cout << "Product is: " << multiply() << endl; cout << "Division is: " << divide() << endl; } T add() { return num1 + num2; } T subtract() { return num1 - num2; } T multiply() { return num1 * num2; } T divide() { return num1 / num2; } }; int main() { Calculator<int> intCalc(2, 1); Calculator<float> floatCalc(2.4, 1.2); cout << "Int results:" << endl; intCalc.displayResult(); cout << endl << "Float results:" << endl; floatCalc.displayResult(); return 0; }
OUTPUT : :
/* C++ Program to build Simple calculator using Class template */ Int results: Numbers are: 2 and 1. Addition is: 3 Subtraction is: 1 Product is: 2 Division is: 2 Float results: Numbers are: 2.4 and 1.2. Addition is: 3.6 Subtraction is: 1.2 Product is: 2.88 Division is: 2 Exit code: 0 (normal program termination)
Above is the source code and output for C++ Program to build Simple calculator using Class template which is successfully compiled and run on Windows System to produce desired output.
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