The calculation order of CCCalc is the same with a majority of desktop and pocket calculators: top to bottom without operations priorities.

To calculate an expression you need to input its numbers and operations. Click virtual keypad buttons or press appropriate keyboard keys to do it.

To finish one calculation and to start a new one, click on button "C" or press ENTER.

Below are most general examples which illustrate calculations process in CCCalc.

Adding two numbers

Let's calculate 2+3

1. Click to the button "C" or press ENTER. It will create an empty expression "0 = 0" at the bottom of the page.

2. Input the first number "2" clicking to an appropriate button or pressing an appropriate key. The expression will turn to 2=2.
Note: To make a number negative, set the caret to the left of this number and input "-".

3. Input "plus". The plus sign will appear at the right and a new text line with "2" that is marked as selected will be added below. The expression will become 2+2=4.

4. Input the second number "3". Selected "2" turns to "3" and you see the result of expression: 2+3=5.

More complicated calculation

Let's calculate 2+3*5

1. Perform steps 1-4 from the previous sample.

Now you have an expression "2+3=5" with the cares set right after the "3".

2. Input "*". A new line with marked "3" is added and the expression result is set temporarily to "15": 2+3*3=15.

3. Input "5".

The expression result is now 25: 2+3*5=25

Intermediary results

CCCalc refreshes expression results while you type, so you see all intermediary results while you input the expression. If you need to see any intermediary result after an expression is completed, simply insert "=" to a desired location of the expression.

For example, let's see how much is "2+3" in the sample above.

1. Set the caret to the right of "3" using a mouse click or moving the caret with arrow keys of the keyboard.
2. Input "=". Now you see that 2+3=5, and the whole expression looks like: 2+3=5*5=25.

Note 1: This example shows that you may continue any expression after its result with any operations and numbers. Just do not forget to conclude it with "=" to see the grand total.

Note 2: The result that is printed after "=" is rounded up. In general it may lead to the fact that the whole expression result with and without such an intermediary prints may differ.

Percent calculations

To perform percent calculations simply add "%" to the right of an appropriate number. It will change an operation meaning as follows:

1. Subtraction and addition. Current result of calculation is subtracted or added with a given amount of percents calculated for this current result. For example 100+5%=105 ; or 51+49+5%=105
2. Multiplication. How much is a given number of percents of the current result:   100*5%=5 ; or 51+49*5%=5
3. Division. Current result is multiplied to 100 and then divided by a given number. It calculates, for example, which number we shall take so that a given number of its percents will be equal to a current result: 100/5%=2000.

Note that "%" after the first number of the expression is ignored.

Square root

To calculate a square root set "√" before a desired number.

For example let's calculate √5:

1. Click to the button "C" or press ENTER. It will create an empty expression "0 = 0" at the bottom of the tape.
2. Input the first number "5" using mouse or keyboard.
3. Click the "√" button or press "S" on the keyboard. Square root sign will appear before the "5" and you'll see the result after "=": √5=2,2361

To calculate square root of a complicated expression, calculate the expression first, say, 9+16=25,  and then:

1. set the caret to an expression result
2. Click "√" button or press "S". Square root sign will appear before the result: 9+16=√25
3. input "=". Now you see what you needed: 9+16=√25=5

Next: Editing