A program to subtract two numbers using object-oriented programming  approach using C++ programming language.

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Program Listing

#include <iostream>

class Calculator {
    int num1, num2;
    void setNums(int n1, int n2) {
        num1 = n1;
        num2 = n2;
    int subtract() {
        return num1 - num2;

int main() {
    Calculator calc;

     std::cout <<"\n\n";
     std::cout << "\tSubtract Two Numbers Using OOP in C++\n\n";

    calc.setNums(100, 50);
    std::cout << "\tThe result is " << calc.subtract() << "." 

    return 0;