C语言实现：字符串中子串出现次数比较

#include <stdio.h>       ///< Define the 'stdio.h' standard header
#define MAXSIZE 100      ///< Define a constant

int find(char *s1, char *subs);    ///< declare the find method
int strlen(char *string);         ///< declare the strlen method
, sumOfVertical = 0, sumOfDiagonal1 = 0, sumOfDiagonal2 = 0
int main() {
char s1[MAXSIZE], s2[MAXSIZE], s3[MAXSIZE];   ///< declare three variables string 
gets(s1);
gets(s2);
gets(s3);    ///< read the three strings

printf("%d %d", find(s1, s2), find(s1, s3));
}


// A method to find the occurrence number of the substring in a string
int find(char *s1, char *subs)
{
int i, j;
int count = 0;
int str1 = strlen(s1), strSub = strlen(subs);    // call the method strlen to calculate the length of the string

for (i = 0;i < str1 - strSub + 1; i++)  
{
for (j = 0; j < strSub; j++)   // traverse the substring
{