Demo Spanning Strings, Strspn() and Strcspn()
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#include <stdio.h>
#include <string.h>
#include <stdio.h>
/*
size_t strspn ( char *stting, char *set_to_skip_over) ;
size_t strcspn( char *string, char *set_to_find_in)
Q are there chars in char set *set_to_find,
return #chars skipped until char found
Q are there chars in char set *set_to_skip_over,
return #chars skipped until char found
*/
int main(void) {
char sentence[] = "Hello. I am John!" ;
char nonsense[] = "~*%#" ;
char letters[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ\
abcdefghijklmnopqrstuvwxyz" ;
int numskipped;
numskipped = strcspn (sentence, letters) ;
printf ("%d chars skipped over until a letter was found.\n",
numskipped) ;
numskipped = strspn (sentence, letters) ;
printf ("%d chars skipped over until a non-letter was found.\n",
numskipped) ;
numskipped = strcspn (sentence, nonsense) ;
printf ("%d chars skipped over until a nonsense character was found.\n",
numskipped) ;
return 0;
}
C
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