Write a program to make a simple calculator

Two numbers are entered and operation (sum,differnce,multiply,divide) to be performed is asked by the user. result is given according to the operation entered by user. (+,-,*,/)

Select To use this code as it is.. select and copy paste this code into code.cpp file

1. #include<iostream.h>
2. #include<conio.h>
3. void main()
4. {
5. clrscr();
6. int s;
7. float a,b,r;
8. char op;
9. cout<<”Please Enter a no.: “;
10. cin>>a;
11. cout<<”Please Enter operation to be performed.:(+,-,*,/,%) “;
12. cin>>op;
13. cout<<”Please Enter another no.: “;
14. cin>>b;
15. switch (op)
16. {
17. case ‘+’:
18. r=a+b;
19. break;
20. case ‘-’:
21. r=a-b;
22. break;
23. case ‘*’:
24. r=a*b;
25. break;
26. case ‘/’:
27. r=a/b;
28. break;
29. default:
30. cout<<”Please enter Correct operation “;
31. s=0;
32. }
33. if(s)
34. cout<<a<<op<<b<<”=”<<r;
35. getch();
36. }