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* Function: str_trim Description: effectively removes all leading and trailing whitespace from the given string s. Examples: BEFORE AFTER abc" "abc" abc "abc" hello there "hello there" a b "а b" Estimated Difficulty: LEVEL 3 * NOTES/COMMENTS: Notice that "internal" whitespace is not removed! Modifications are made to the given string -- you are not creating a new string. Use the library function isspace to test if a character is whitespace or not. is whitespace, it is not the only whitespace char; the tab character '\t' for example is considered While the usual space character whitespace. Let the isspace function figure this out for vou

* Function: str_trim Description: effectively removes all leading and trailing whitespace from the given string s. Examples: BEFORE AFTER abc" "abc" abc "abc" hello there "hello there" a b "а b" Estimated Difficulty: LEVEL 3 * NOTES/COMMENTS: Notice that "internal" whitespace is not removed! Modifications are made to the given string -- you are not creating a new string. Use the library function isspace to test if a character is whitespace or not. is whitespace, it is not the only whitespace char; the tab character '\t' for example is considered While the usual space character whitespace. Let the isspace function figure this out for vou

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Write a str trim function in C 

```c /** * Function: str_trim * * Description: effectively removes all leading and trailing * whitespace from the given string s. * * Examples: * * BEFORE AFTER * * " abc" "abc" * " abc " "abc" * " hello there " "hello there" * " a b " "a b" * * Estimated Difficulty: LEVEL 3 * * NOTES/COMMENTS: * * Notice that "internal" whitespace is not removed! * Modifications are made to the given string -- you are * not creating a new string. * Use the library function isspace to test if a character * is whitespace or not. While the usual space character * ' ' is whitespace, it is not the only whitespace char; * the tab character '\t' for example is considered * whitespace. Let the isspace function figure this out * for you. */ void str_trim(char *s); ```
Transcribed Image Text:```c /** * Function: str_trim * * Description: effectively removes all leading and trailing * whitespace from the given string s. * * Examples: * * BEFORE AFTER * * " abc" "abc" * " abc " "abc" * " hello there " "hello there" * " a b " "a b" * * Estimated Difficulty: LEVEL 3 * * NOTES/COMMENTS: * * Notice that "internal" whitespace is not removed! * Modifications are made to the given string -- you are * not creating a new string. * Use the library function isspace to test if a character * is whitespace or not. While the usual space character * ' ' is whitespace, it is not the only whitespace char; * the tab character '\t' for example is considered * whitespace. Let the isspace function figure this out * for you. */ void str_trim(char *s); ```
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