VB String Bulit In Functions,Visual Basic String Function Visual Basic Built In String Functions and
ASCII CHART
|
Function
|
Purpose
|
|
LCase$
(S)
|
Converts any uppercase letters in string to
lowercase.
|
|
UCase$
(S)
|
Converts any lowercase letters in string to
uppercase.
|
|
Left$
(S, n)
|
Returns the number of specified characters,
starting at the beginning of the string (from the left).
|
|
Right$
(S, n)
|
Returns the number of specified characters
from the end of the string (from the right).
|
|
Mid$
(S, n1, n2)
|
Returns the character string starting at the
position indicated by the first number and continuing for the length specified
by the second number.
|
|
Len$
(S)
|
Returns the number of characters in the
string.
|
|
Trim$
(S)
|
Removes the spaces from the beginning and the
end of the string.
|
|
InStr$
(S1, S2)
|
Searches for the first occurrence of one
string in another and gives the position at which the string is found
|
|
StrReverse$(S)
|
Reverses the characters of the string.
|
|
Replace$(S,S1,S2)
|
Replaces substrings in a string.
|
|
Str$(x)
|
Converts a number to a
numeric string value.
|
|
Val(X)
|
Converts a numeric
string value to a number.
|
|
Sqr
(n)
|
Gives the square root
of ‘n’
|
|
Int
(n)
|
Gives the integer part
of ‘n’ e.g. Int(2.1) = 2, Int(2.6) = 2
|
|
Round
(n , x)
|
Rounds a number ‘n’ to
‘x’ decimal places. e.g. Round (6.6666 , 2) = 6.67
|
|
Cos
(theta)
|
Gives the cosine of
theta (theta should be in radians) .We also have other trigonometric
functions available.
|
|
Log
(x)
|
Gives the natural log
of ‘x’.
|
|
Asc(ch)
|
Gives the ASCII value
of character
|
|
Chr(n)
|
Gives the Character
against ASCII value/.
|
|
Rnd
|
Use for random number
generation.
|
|
Abs(n)
|
Absolute the value of n
|
|
Sgn(n)
|
Give the Sign of n,if n
is +ve give 1 ,if n is –ve give -1 and if is zero than give 0
|
|
|
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ASCII CHART
|
|
|
0,1,2…..9
|
48,49,50…..57 respectively
|
|
A,B,C
……Z
|
65,66,67…..90 respectively
|
|
a,b,c
……z
|
97,98,…….122 respectively
|
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