Linux calculator BC

The BC Calculator is a calculator that comes with Linux and is easy to use.

OPTIONS
-H,--help
Print the usage and exit.

-I.,--interactive
Force interactive mode.

-L,--mathlib (commonly used, this entry will have some common mathematical functions can be used, trigonometric, log, E, etc.)
Define the standard math library.

-W,--warn
Give warnings for extensions to POSIX BC.

-S,--standard
Process exactly the POSIX BC language.

-Q,--quiet (after this entry, no that write welcome message)
Do not print the normal GNU BC welcome.

-V,--version
Print the version number and the copyright and quit.

1. BC

The operations that can be performed include:

+         -          *          /             %                   ^

Subtraction to find the remainder (modulus) of the second square

Note: In the floating point operation, or when the result has a floating point number, the decimal point should be set scale=2 to take two decimal places

2, Bc-l

In this way the calculator, you can use the inside of a lot of library of functions,

For example:

L (x): logarithm of base x on E

E (x): E x Time Square

L (2.71828)
.99999932734728200315
E (1)
2.71828182845904523536
E (2)
7.38905609893065022723

3. Using the BC Calculator via pipeline command

3.1 Usage 1

echo "2*3" | Bc
6

3.2 Usage 2

echo "2/3" |BC

0

echo "SCALE=2;2/3" |BC

.66

3.3 Usage 3 (binary conversion)

If Obase is not specified, the default conversion is 10 binary.

echo "Obase=2;ibase=10;3" |BC #10进制转化为2进制

11

echo "obase=10; ibase=16; F "|BC # Note 16 binary letters must be capitalized

Note: The obase option is placed before the IBase option, and the order cannot be reversed.

4. BC Execution File

Example: A statement that is an operation in a TEST.BC file

Cat TEST.BC #输出以下内容
scale=2
1+2
3*5
4/3
5%2
2^4

Cat TEST.BC | BC can execute the above statement

or BC TEST.BC

Execution Result:

3
15
1.33
0
16

Linux calculator BC