1. The display name of the key on the calculator1.0 InheritanceJFrameclass Public class Calculate extends JFrame {}1.1 Defining constants The display name of the key on the/** calculator */ Public Final String[] KEYS = {"7", "8", "9", "/", "sqrt",
Because it is a novice (very pure kind), so a bit messy, the code is very redundant (will be condensed later), naming rules please ignore. Of course, this calculator is only able to run up to the extent that there will be some inexplicable error,
In the operation of floating-point numbers in PHP, a hole was encountered, which did not get the expected result, as follows:
$a = 69.1;$b = $a *100;$c = $b-6910;
What do you think the value of $c is? The value $c output is -9.0949470177293E-13.
I asked a friend about the representation of floating point Decimals in Java and C/C ++. I didn't expect him to write a blog to answer my questions. Thank you, slimzhao ).
After reading his blog, I learned a lot. Now I will reference it and
BC is the abbreviation for binary calculator. The parameters of the bc* function are the operands plus an optional [int scale], such as String Bcadd (String $left _operand, String $right _operand[, int $scale]), assuming scale does not provide , the
BC is the abbreviation for binary calculator. The arguments to the bc* function are the operands plus an optional [int scale], such as String Bcadd (String $left _operand, String $right _operand[, int $scale]), if scale is not provided , the default
BC is the abbreviation for binary calculator. The arguments to the bc* function are the operands plus an optional [int scale], such as String Bcadd (String $left _operand, String $right _operand[, int $scale]), if scale is not provided , the default
Generally speaking, 32-bit and 64-bit systems have two differences: hardware and software.
Hardware:The 64-bit and 32-bit architectures are different. Here, the 64-bit technology is relative to 32-bit, which refers to general-purpose registers
BC is the abbreviation of binary calculator. The arguments for the bc* function are the operands plus an optional [int scale], such as String Bcadd (String $left _operand, String $right _operand[, int $scale]), if scale does not provide , the
BC is the abbreviation of binary calculator. The arguments for the bc* function are the operands plus an optional [int scale], such as String Bcadd (String $left _operand, String $right _operand[, int $scale]), if scale does not provide , the
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