Texas Instruments TI-89 User Manual - Page 602
String Commands, See the, module for syntax for all commands and functions.
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String Commands Note: See the Technical Reference module for syntax for all commands and functions. Command # & char dim expr format inString left mid ord Description Converts a string into a variable name. This is called indirection. Appends (concatenates) two strings into one string. Returns the character that corresponds to a specified character code. This is the opposite of the ord command. Returns the number of characters in a string. Converts a string into an expression and executes that expression. This is the opposite of the string command. Important: Some user input commands store the entered value as a string. Before you can perform a mathematical operation on that value, you must convert it to a numeric expression. Returns an expression as a character string based on the format template (fixed, scientific, engineering, etc.) Searches a string to see if it contains a specified substring. If so, inString returns the character position where the first occurrence of the substring begins. Returns a specified number of characters from the left side (beginning) of a string. Returns a specified number of characters from any position within a string. Returns the character code of the first character within a string. This is the opposite of the char command. Programming 602