Example: strchr() function in C In this example, we have a string and we are searching a character ‘u’ in the string using strchr() function. When we displayed the string value of the returned pointer of the
This example demonstrates finding a character in a string usingstrchr. basic_search.c #include <stdio.h> #include <string.h> int main() { const char *str = "Hello, World!"; char ch = 'W'; char *result = strchr(str, ch); if (result != NULL) { printf("Found '%c' at positio...
An example of using algebraic transformations for code optimization. Fast strlen function Unrolling the loop in strlen function. Using sentinel for string manipulation A method for optimizing search functions. Checking if the point belongs to an interval How to replace two comparisons with one. Impleme...
The strchr() function returns a pointer to the first occurrence of the character c in the string, or NULL if the character does not occur in the string.Example 1In the following example will help you to understand the usage of the C++ strchr() function. Here, we will take a string ...
Example Copy // crt_strchr.c // // This program illustrates searching for a character // with strchr (search forward) or strrchr (search backward). // #include <string.h> #include <stdio.h> int ch = 'r'; char string[] = "The quick brown dog jumps over the lazy fox"; char fmt...
The strchr function finds the first occurrence of c in str, or it returns NULL if c isn't found. The null terminating character is included in the search.wcschr, _mbschr and _mbschr_l are wide-character and multibyte-character versions of strchr. The arguments and return value of wcschr ...
Pointer to the found character in str, or a null pointer if no such character is found. Example Run this code #include <cstring> #include <iostream> int main() { const char* str = "Try not. Do, or do not. There is no try."; char target = 'T'; const char* result = str;...
Example /* STRCHR.C: This program illustrates searching for a character * with strchr (search forward) or strrchr (search backward). */ #include <string.h> #include <stdio.h> int ch = 'r'; char string[] = "The quick brown dog jumps over the lazy fox"; char fmt1[] = " 1 2 ...
This article should be viewed as an exercise in code optimization, not as a recommendation for everyday programming. Vectorized strlen A usual implementation of strlen function scans the string byte-by-byte looking for terminating zero. For example: size_t strlen(const char *s) { const char *...
For each character c in string s Check if c equals '_' If yes, increase count EDIT: C++ example code: int count_underscores(string s) { int count = 0; for (int i = 0; i < s.size(); i++) if (s[i] == '_') count++; ...