Separate the integer and decimal parts of a floating point number.
Problem description: how to obtain the integer and decimal part of a floating point number
Method 1:
1 #include
Output:I =-23, ff =-0.0400009 disadvantages: the number of digits in decimal places cannot be
Array-08. String converted to decimal integer (15) time limit MS Memory limit 65536 KB code length limit 8000 B award Program StandardAuthor Zhang Tong Hongyu (Zhejiang University)Enter a string ending with #, which requires filtering out all non-hexadecimal characters (not case), forming a new string representing a hexadecimal number, and then converting it to a decima
At the invitation of a netizen, I wrote a numeric conversion function. If you have any shortcomings, click it. # Include
/* * Function: int convert (INT num, char * STR, unsigned int Radix)* Function: convert a decimal integer to 2 ~ 36 (excluding 10) hexadecimal number* Parameter: num decimal integer* String buff
[Template applet] adds a large number in decimal format (positive integer version + negative number version), including validity check and negative number of digits
To adapt to different purposes, the big number algorithm is written into two versions, namely, the version that only processes positive integers and the version that contains negative numbers. You can select the version as needed.Version 1: only
This article mainly introduces a simple example of JavaScript to verify integer plus to retain the decimal point. If you need it, please refer to it.
The Code is as follows:
Function validateNum (obj ){// Positive integer (cache is used here)Var number = obj. data (validate). number;// Decimal point (cache is used he
In the PY application there are many numbers in the results of the operation, it is inevitable that the division (such as unit conversion, etc.), but the integer after the operation will only return an integer, the general results need to be accurate to the next two bits, at this time you can use the following two ways to solve:1. Convert any integer that partici
Determines whether the amount entered is a positive integer and a positive decimal numberdefcheck_float (String):#when paying, the amount you enter may be a decimal or an integers =str (string)ifS.count ('.') = = 1:#determine the number of decimal pointsSL = S.split ('.')#split by
Based on jQuery, only numbers (decimal and integer) can be entered in the text box. jquery text box
In practical use, sometimes only integers can be input in the text box, but sometimes it may be more "friendly", and floating point numbers can be input, the following example shows how to use jquery to implement a text box that can only input decimals. The Code is as follows:
The above Code meets our requir
Code:
Int ZH (char s []) {int I, m, temp = 0, N; M = strlen (s); // The hexadecimal format is passed in by string, therefore, you must obtain the string length for (I = 0; I Temp = temp * 16 + N ;}Return temp;}
Reference: how to convert a hexadecimal string into a decimal integer in C
The hexadecimal string is converted into a decimal
In practice, the text box can sometimes only allow the input of integers, but sometimes more "fraternity" point, you can allow the input floating-point number, the following is the example code to introduce how to use jquery to implement a text box can only enter a decimal , the code is as follows:
The above code to achieve our requirements, the text box can only enter an integer or floating-p
FunctionvalidateNum (val) {// verify the integer varpatten/^ -? \ D + $/; returnpatten. test (val);} functionvalidateRealNum (val) {// verify the real number varpatten/^ -? \ D + \.? \ D * $/; returnpatten. test (val);} fu
Function validateNum (val) {// verify the integerVar patten =/^ -? \ D + $ /;Return patten. test (val );}Function validateRealNum (val) {// verify the real number
Var patten =/^ -? \ D + \.? \ D * $ /;
Return patten. test (val );
}
Previously, the hexadecimal format was converted to decimal format. The hexadecimal format was always first converted to binary format, and then converted to decimal format. Today I see a question: convert a hexadecimal number into an integer. Searching on the internet found that in addition to this conversion, it can also be converted to
1. Discard the fractional part, preserving the whole number of partsparseint ()22.127456 take into 22.13 parseint (5/2)2 rounding up, with decimals on the integer part plus 1Math.ceil (5/2)3, rounded.Math.Round (5/2)4, rounding downMath.floor (5/2)5 interception (most primitive)function Get (){var s = 22.127456 + "";var str =S.substring (0,s.indexof (".") + 3);alert (str);}6 Regular ExpressionsSome other methodsJS
The division result of El expression is float.For example, $ {8/7}, $ {6/7}, and $ {12/7} are displayed on the page as follows:1.14285714285714280.85714285714285711.7142857142857142
Now, my goal is to only take the preceding integer. Now I use the The result is 1.Maxfractiondigits = "0" indicates to retain 0 decimal places, that is, to take an integer. Note: The
/^\d+ (\.\d+)? $/\d+ can match any integer, not too strict, like 01,000123 will also be matched in parentheses, you can match the point plus any integer, it becomes a decimal, the question mark after the parentheses to express the contents of the parentheses is optional if you do not let the match, 000123, that's it:/^ (\d|[ 1-9]\d+) (\.\d+)? $/(\d|[ 1-9]\d+), wh
/// how much of the output data is in the binary + /// returns data for conversion completion - Public stringConvertnumber (stringInputintTypeofinput,inttypeofoutput) the { * intValue =Convert.ToInt32 (input, typeofinput); $ stringres =convert.tostring (value, typeofoutput);Panax Notoginseng - returnRes; the } + A Private voidBtn8_10_click (Objectsender, EventArgs e) the { +Textboxofoutput.text = Conv
How does ppt make a decimal multiplication integer example animation?
First, the production of material
1, the first production of a number of monomer composition of a whole. Insert--Rectangle, pull out a slender rectangle on the stage.
2, drawing tools--format--shape fill--No fill color. Make the rectangle retain only the lines and prepare for the subsequent transition fill. Shape contour with the b
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