C语言代码实现BF算法

以下是C语言实现BF算法的代码示例：

#include <stdio.h>
#include <string.h>

int BF(char *s, char *p) {
    int i = 0, j = 0;
    int s_len = strlen(s);
    int p_len = strlen(p);
    while (i < s_len && j < p_len) {
        if (s[i] == p[j]) {
            i++;
            j++;
        } else {
            i = i - j + 1;
            j = 0;
        }
    }
    if (j == p_len) {
        return i - j;
    } else {
        return -1;
    }
}

int main() {
    char s[] = "hello world";
    char p[] = "world";
    int pos = BF(s, p);
    if (pos == -1) {
        printf("Not found\n");
    } else {
        printf("Found at position %d\n", pos);
    }
    return 0;
}