The basic problem of the decimal point between VB characters

Most of the decimal places in VB are attributes, such as:

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It can be understood that in the module named text, there is a custom variable group named text, in which there is a "text"; It can also be understood as a form named text, which has a textbox (text box, or combobox) named text, with the property 'text'.

text(text,text) You're right ...

This is not a good way to write, if the string is empty, it will be wrong because the data type is wrong.

VB has functions that are specifically used for rounding.

round function: Returns a numeric value rounded to the specified number of digits.

Syntax: round(expression[,numdecimalplaces]).

Argument: expression (mandatory) Numeric expression to be rounded; NumDecimalplaces (optional) The number indicates how many digits to the right of the decimal point are rounded, and if omitted, the round function returns an integer.

The following example uses the round function to round the value to two decimal places:

dim myvar,pi

pi =myvar = round(pi,2) 'myvar contains

You can also use the format function to control the formatting.

format(expression[, format[, firstdayofweek[, firstweekofyear]]]

The syntax of the format function has the following sections:

Section Description.

expression parameters. Any valid expression.

format parameter. Valid named expressions or user-defined formatted expressions.

FirstdayOfWeek optional parameter. A constant that denotes the first day of the week.

FirstWeekOfYear optional parameter. constant, which denotes the first week of the year. For example, take 2 digits for a.

format(a,"")

format() is output as a character.

If it is used for display, use round(x,n) to take n decimal places after the variable x.