Overview of String Functions in C
- strcat function: Appending one string at the end of another.
- strlwr ( ): Converts string to lowercase.
- strupr ( ): Converts string to uppercase.
- strrev ( ): Reverses the given string.
- strset ( ): Sets all characters in a string to a given character.
Case Sensitivity in String Functions
Is strstr case sensitive? This function is case-sensitive. For case-insensitive searches, use stristr().
Implementation of toupper() function
What is toupper in C? The toupper() function converts the lowercase letter c to the corresponding uppercase letter. Both functions return the converted character. If the character c does not have a corresponding lowercase or uppercase character, the functions return c unchanged.
Comparison between Strstr and Strchr
Is strstr and strchr aliases mcq? The strchr() is a String function which searches for the first occurrence of a string inside another string. And this function is an alias of the strstr() function which starts at the last occurrence.
Iterative Implementation of Strstr
How is Strstr implemented? Iterative Implementation Following’s iterative implementation of the strstr() function. It returns a pointer to the first occurrence of Y in X or a null pointer if Y is not part of X. The time complexity of this solution is O(m.n) where m and n are the length of String X and Y, respectively.