strpbrk

 

C

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Strings library

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Null-terminated byte strings

Functions
Character manipulation
isalnum isalpha islower isupper isdigit isxdigit isblank (C++11)	iscntrl isgraph isspace isprint ispunct tolower toupper
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atof atoi atol atoll strtol strtoll	strtoul strtoull strtof strtod strtold
String manipulation
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String examination
strlen strcmp strncmp strcoll strchr strrchr	strspn strcspn strpbrk strstr strtok
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Defined in header <string.h>
char* strpbrk( const char* dest, const char* str );

Finds the first character in byte string pointed to by dest, that is also in byte string pointed to by str.

Parameters

dest	-	pointer to the null-terminated byte string to be analyzed
str	-	pointer to the null-terminated byte string that contains the characters to search for

Return value

Pointer to the first character in dest, that is also in str, or NULL if no such character exists.

Example

run this code

#include <stdio.h>
#include <string.h>
 
int main() 
{
    char* input = "hello world friend of mine";
    char* space = " ";
    char* pos = input;
    int word_counter = 0;
 
    do {
        pos = strpbrk(pos, space);
        word_counter++;
        pos ? pos++ : pos;
        printf("%d\n", word_counter);
    } while (pos != NULL);
};

Output:

1
2
3
4
5

See also

strcspn	returns the length of the maximum initial segment that consists of only the characters not found in another byte string (function)
strchr	finds the first occurrence of a character (function)