#include <stdio.h>#include <string.h>#define N 256int fun(const char* s1, const char* s2){    int a[N][N];    int len1 = strlen(s1);    //字符串s1的长度     int len2 = strlen(s2);    //字符串s2的长度     int i,j;        memset(a,0,sizeof(int)*N*N);    //初始化数组为0         int max = 0;    for(i=1; i<=len1; i++){        for(j=1; j<=len2; j++){            if(s1[i-1]==s2[j-1]) {                a[i][j] = a[i-1][j-1] + 1;                  if(a[i][j] > max) {                    max = a[i][j];                }             }        }    }        return max;}int main(){    printf("%d\n", fun("abcdkkk", "baabcdadabc"));    //4    return 0;}