strchr
Defined in header <string.h>
|
||
---|---|---|
|
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
#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) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/c/string/byte/strchr