Assignment 1 (Calculator)

Stanford CS 193P IOS Application Development

functionality

1. work with floating point numbers
2. offer the +, -, ×, ÷ basic binary operators.
3. offer the cos(), sin(), tan(), abs(), x^2, x^3, lg(), rand() basic unary operators.
4. backspace(right side of the display screen) and all clear button
5. a description screen that shows the calculating steps.

appearance

1. original ios calculator colors.
2. good screen fit.
3. screen shot below.
   
   

Assignment 2 (Calculator with undo and variables)

Stanford CS 193P IOS Application Development

functionality

1. work with floating point numbers
2. offer the +, -, ×, ÷ basic binary operators.
3. offer the cos(), sin(), tan(), abs(), x^2, x^3, lg(), rand() basic unary operators.
4. backspace(right side of the display screen) and all clear button
5. click the backspace button "<-" until the last digit left will cause undo.
6. a description screen that shows the calculating steps.
7. add variable using "M" button.
8. using "➝ M" button to set or reset the value of the "M" variable, then recualte the expresstions.

appearance

1. original ios calculator colors.
2. good screen fit.
3. screen shot below.
   
   
   
   

Assignment 3 (Calculator with graph functionality)

Stanford CS 193P IOS Application Development

functionality

1. work with floating point numbers
2. offer the +, -, ×, ÷ basic binary operators.
3. offer the cos(), sin(), tan(), abs(), x^2, x^3, lg(), rand() basic unary operators.
4. backspace(right side of the display screen) and all clear button
5. click the backspace button "<-" until the last digit left will cause undo.
6. a description screen that shows the calculating steps.
7. add variable using "M" button.
8. using "➝ M" button to set or reset the value of the "M" variable, then recualte the expresstions.
9. using "~" button to generate graph for function that user input.

appearance

1. original ios calculator colors.
2. good screen fit.
3. screen shot below.