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Find the first occurrence of a character in a string
#include <string.h>
char* strchr(char* s,
int c );
- s
- The string that you want to search.
- c
- The character that you're looking for.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The strchr() function finds
the first occurrence of c (converted to a char)
in the string pointed to by s.
The terminating NUL character is considered to be part of
the string.
A pointer to the located character, or NULL
if c doesn't occur in the string.
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main( void )
{
char buffer[80];
char* where;
strcpy( buffer, "video x-rays" );
where = strchr( buffer, 'x' );
if( where == NULL ) {
printf( "'x' not found\n" );
} else {
printf( "'x' found: %s\n", where );
}
return EXIT_SUCCESS;
}
ANSI,
POSIX 1003.1
Safety: | |
Cancellation point |
No |
Interrupt handler |
Yes |
Signal handler |
Yes |
Thread |
Yes |
memchr(),
strcspn(),
strpbrk(),
strrchr(),
strspn(),
strstr(),
strtok(),
strtok_r(),
wcschr(),
wcscspn(),
wcspbrk(),
wcsrchr(),
wcsspn(),
wcsstr(),
wcstok()
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