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Purpose |
Return the ASCII code of the specified character in a string. |
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Syntax |
y = ASC(string_expression [, position&]) |
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Remarks |
ASC returns the ASCII code (0 to 255) of the specified character of string_expression. The first character of the string is position one, followed by position two, etc. If position& is not specified then the first character is presumed. If position& is a negative number, ASC counts from the end of the string back toward the front. For example, if position& is -1 then the last character is returned. If position& is -2 then the second from last character is returned, and so on. The acronym ASCII stands for American Standard Code for Information Interchange, a standardized code in which the numbers between 0 and 127 are used to represent the upper and lowercase letters, the numerals 0 to 9, punctuation marks, and other symbols used in data communication. PCs employ an extended version of ASCII, which contains codes 0 through 255. The "upper" 128 codes (128-255) are not standard ASCII codes, and may differ from one country to another, and from code page to code page. CHR$ does the reverse of ASC - it produces the one-character string corresponding to its ASCII code argument. |
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Restrictions |
If the string passed is null (zero-length) or the position is zero or greater than the length of the string, the value -1 is returned. |
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See also |
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Example |
x$ = "The ASCII value of A is" + STR$( ASC("A") ) |
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Result |
The ASCII value of A is 65 |