Programming in C
4th Edition
ISBN: 9780321776419
Author: Stephen G. Kochan
Publisher: Addison-Wesley
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Textbook Question
Chapter 9, Problem 4E
Write a function called s to extract a portion of a character string. The function should be called as follows:
s
where S is the character string from which you are extracting the substring, S is an index number into S indicating the first character of the S, c is the number of characters to be extracted from the S string, and r is an array of characters that is to contain the extracted substring.
For example, the call
s
extracts the substring̎ (three characters starting with character number 4) from the string̎ and places the result in r.
Be certain the function inserts a null character at the end of the substring in the result array. Also, have the function check that the requested number of characters does, in fact, exist m the string. If this is not the case, have the function end the substring when it reaches the end of the source string. So, for example, a call such as
s
should just place the string “words” inside the result array, even though 20 characters were requested by the call.
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Chapter 9 Solutions
Programming in C
Ch. 9 - Type in and run the 11 programs presented in this...Ch. 9 - Prob. 2ECh. 9 - Write a function called s to extract a portion of...Ch. 9 - Write a function called f to determine if one...Ch. 9 - Write a function called r to remove a specified...Ch. 9 - Write a function called i to insert one character...Ch. 9 - Using the f , r , and i functions from preceding...Ch. 9 - Extend the s function from Program 9.11 so that if...Ch. 9 - Write a function called s that converts a...Ch. 9 - If c is a lowercase character, the expression C...
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