/*first enter the m for multiplication s for substraction a for additon d for division */ /* then enter the first number then the 2nd one (you have to enter each input in a new line) */ /* if you want to continue enter y in a new line */ #include using namespace std; int x, y, a, b, p, q, r, s; char userAnswer; char answer; int calcAddition(int x, int y){ int answerA = x + y; return answerA; } int calcSubstraction(int a, int b){ int answerB = a - b; return answerB; } int calcMultiplication(int p, int q){ int answerC = p * q; return answerC; } int calcDivision(int r, int s){ int answerD = r / s; return answerD; } int main() { do{ cout << "enter what do you want to do?" << endl; cout << "'a' for addition" << endl; cout << "'s' for substraction \n"; cout << "'m' for multiplication \n"; cout << "'d' for division \n"; cin >> answer; if(answer=='a'){ cout << "enter two numbers you want to add together" << endl; cin >> x; cin >> y; cout << calcAddition(x, y); } else if(answer=='s'){ cout << "enter two numbers you want to substract" << endl; cin >> a; cin >> b; cout << calcSubstraction(a, b); } else if(answer=='m'){ cout << "enter two numbers you want to multiply" << endl; cin >> p; cin >> q; cout << calcMultiplication(p, q); } else if(answer=='d'){ cout << "enter two numbers you want to divide" << endl; cin >> r; cin >> s; cout << calcDivision(r, s); }else{ cout << "Invalid input" << endl; } cout << "\nDo you want to continue? y/n \n"; cin >> userAnswer; }while(userAnswer=='y'); return 0; }

simple calculator without using switch