.Write a program in C++ of a Simple Calculator
#include<iostream.h>
#include<conio.h> class calculator { int num,x; public: void get_data(); void get_result(); int add(); int subtract(); int divide(); int multiply(); void clear(); }; void calculator::get_data() { num=x; } int calculator::add() { num=num+x; return(num); } int calculator::subtract() { num=num-x; return(num); } int calculator::divide() { num=num/x; return(num); } int calculator::multiply() { num=num*x; return(num); } void calculator::get_result() { num=x; cout<<num; } void calculator::clear() { clrscr(); num=0; } void main() { clrscr(); int ch,num,x;calculator ob; do { cout<<"Menu"<<" 1 get"<<" 2 add"<<" 3 sub"<< " 4 div"<<" 5. mul"<<" 6 clear"<<" 7 result"<<endl; cin>>ch; switch(ch) { case 1:ob.get_data(); break; case 2:ob.add(); break; case 3:ob.subtract(); break; case 4:ob.divide(); break; case 5:ob.multiply(); break; case 6:ob.clear(); break; case 7:ob.get_result(); break; } }while(ch<=7); getch(); } |