1 #include "Calculator.h" 2 add(int a,int b)3int Calculator::add(int a, int b) { 4 return a + b; 5 } 6 subtract(int a,int b)7int Calculator::subtract(int a, int b) { 8 return a - b; 9 } 10 multiply(int a,int b)11int Calculator::multiply(int a, int b) { 12 return a * b; 13 } 14 divide(int a,int b)15double Calculator::divide(int a, int b) { 16 return static_cast<double>(a) / b; 17 } 18