字符串匹配

匹配字符串

#include <stdio.h>
#include <stdlib.h>

#define TRUE 1
#define FALSE 0
#define OVERFLOW -2
#define ERROR 0
#define OK 1
#define MAX_QSIZE 5
#define INCREMENT 2


int stringMatch(char * s1, int len1, char * s2, int len2)
{
	int j = 0;
	// printf("s1 = %s, s2 = %s\n", s1, s2);

	while(j <= len1 - len2)
	{
		int i = 0;
		while(i <= len2 -2)
		{
			if(s1[j] == s2[i])
			{
				j++;
				i++;
			}
			else
			{
				j++;
				break;
			}
			// printf("# i = %d\n", i);
		}

		// printf("i = %d\n", i);
		if(i == len2 - 1)
		{
			return j-len2+2;
		}
		// printf("i = %d\n", i);
		// printf("$\n");
		// printf("%d\n", j);
	}

	return -1;
}

int main(void)
{
	char str1[] = "ababcabcascbab";
	char str2[] = "asc";
	int l1 = sizeof(str1) / sizeof('a');
	int l2 = sizeof(str2) / sizeof('a');
	int k = stringMatch(str1, l1, str2, l2);


	printf("l1 = %d, l2 = %d\n", l1, l2);
	printf("%s\n", str2);
	
	printf("%d\n", k);

	return 0;
}