Calculator v1.0

/* Calculator v1.0 (C) Sudipto Ghosh. 2018. */ #include <iostream> using namespace std; // get values for required operations int getValue(){ cout << "Enter an integer: "; int a; cin >> a; return a; } // get the type of operation to be performed int decideOperation(){ cout << "What do you want me to do with them?" << endl; cout << "(1) Addition" << endl << "(2) Multiplication." << endl; cout << "(3) Subtraction" << endl << "(4) Division."<< endl; cout << "Your reply: "; int a; cin >> a; return a; } int add(int x, int y){ return x + y; } int multiply(int x, int y){ return x * y; } int subtract(int x, int y){ return x - y; } int divide(int x, int y){ return x / y; } // perform mathematical calculations based on // decideOperation() on variables: 'x' and 'y' // using function call to getValue() int doCalculation(){ // acquire the variables cout << "What is the first integer?" << endl; int x = getValue(); cout << "What is the second one?" << endl; int y = getValue(); // prompt user to decide type of operation int o = decideOperation(); int r; // addition if (o==1) { r = add(x,y); } // multiplication if (o==2) { r = multiply(x,y); } // subtraction if (o==3) { r = subtract(x,y); } // division (integer) if (o==4) { r = divide(x,y); } return r; } int main() { // greet the user with a friendly message cout << "Haaallloooo!!" << endl; cout << "Welcome to Calculator v1.0" << endl << "------------------------" << endl; cout << "Give me the values to operate on, will ya?" << endl; // get value of result int r = doCalculation(); // print the result on console cout << "The result is " << r << "." << endl; return 0; }