Syntax
#include <string.h>
size_t strcspn(const char *string1, const char *string2);
Arguments
string1 character string to be searched
string2 holds the characters that are all to be compared to each character in string1 sequentially
until one of the characters in string2 is found in string1
Return Value
The length of the maximum initial segment of string1 that consists entirely of characters that do
not exist in string2
Description
It computes and returns the length of the maximum initial segment of string1 that consists entirely of characters not found in string2.