Standard Calculator in Android Mobile App




Design a standard calculator in  android.

Description: The following program is a standard calculator. This program operates and functions like a standard calculator.
In this program we will insert buttons for all numbers from 0 to 9 and operators such as +,-,*,/  .

The equal button will be having the main logic of calculating answers in it and then display it in the text box or label as specified.

The negative numbers can be entered too the logic is written in –m button on click of which user can enter negative number eg. -2 ,-1 etc.

Clear button will reset all the values in text box to null.

Logic used are
Addition:
ans= a+b;
Subtraction :
ans = a-b;
Multiplication:
ans = a*b;
Division:
ans=a/b;

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