char* strchr( const char* str, int ch );
(1)/*QChar*/ *strchr( /*QChar*/ *str, int ch );
(2) (since C23)1) 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'.
2)Type-generic function equivalent to
(1). Let
T
be an unqualified character object type.
str is of type const T*, the return type is const char*.str is of type T*, the return type is char*.If a macro definition of each of these generic functions is suppressed to access an actual function (e.g. if
(strchr)or a function pointer is used), the actual function declaration
(1)becomes visible.
The behavior is undefined if str is not a pointer to a null-terminated byte string.
[edit] Parameters str - pointer to the null-terminated byte string to be analyzed ch - character to search for [edit] Return valuePointer to the found character in str, or null pointer if no such character is found.
[edit] 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.'[edit] References
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