strchr
| Defined in header <string.h>
|
||
| char *strchr( const char *str, int ch ); |
||
Finds the first occurrence of ch (after conversion to char as if by (char)ch) in the null-terminated byte string pointed to by str (each character interpreted as unsigned char). The terminating null character is considered to be a part of the string and can be found when searching for '\0'.
The behavior is undefined if str is not a pointer to a null-terminated byte string.
Parameters
| str | - | pointer to the null-terminated byte string to be analyzed |
| ch | - | character to search for |
Return value
Pointer to the found character in str, or null pointer if no such character is found.
Example
Run this code
#include <stdio.h> #include <string.h> int main(void) { const char *str = "Try not. Do, or do not. There is no try."; char target = 'T'; const char *result = str; while((result = strchr(result, target)) != NULL) { printf("Found '%c' starting at '%s'\n", target, result); ++result; // Increment result, otherwise we'll find target at the same location } }
Output:
Found 'T' starting at 'Try not. Do, or do not. There is no try.' Found 'T' starting at 'There is no try.'
References
- C11 standard (ISO/IEC 9899:2011):
- 7.24.5.2 The strchr function (p: 367-368)
- C99 standard (ISO/IEC 9899:1999):
- 7.21.5.2 The strchr function (p: 330)
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.11.5.2 The strchr function
See also
| searches an array for the first occurrence of a character (function) | |
| finds the last occurrence of a character (function) | |
| finds the first location of any character in one string, in another string (function) |