CSc 265 Lab 8

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Implement the C function countTokens according to the specification given below. You must make use of the standard C functions strspn and strcspn, which are also documented below. Your implementation must be clearly written and as simple as possible - use only 1 loop and no more than 15 lines of code.

size_t strspn(char* s, char* set)
returns the length of the initial portion of the string s that consists of only characters contained in the string set.

size_t strcspn(char* s, char* set)
returns the length of the initial portion of the string s that consists of only characters not contained in the string set.

/* Return the number of tokens in s. A token is a substring
   s[i..j] where:
	0 <= i <= j < strlen(s)-1 and
	s[i..j] contains no character in delim and
	either i == 0 or s[i-1] is in delim and
	either j == strlen(2)-1 or s[j+1] is in delim. */

int countTokens(char* s, char* delim) {

	char* s0;
	int count = 0;

	s0 = s;
	s0 += strspn(s0,delim) /*skip over any leading delimiters*/
	while (*s0 != '\0') {
		s0 += strcspn(s0,delim); /*skip over token*/
		s0 += strspn(s0,delim); /*skip over delimiters*/
		count++;
	}

	return(count);
}