#define _CRT_SECURE_NO_WARNINGS

 #include<stdio.h>

 #include<stdlib.h>

 #include<string.h>

 int method()

 {

     char *p = "123abcd23sdfwee131abcd12344abcd";

     int ncount = ;

     /*do

     {

     p = strstr(p, "abcd");

     if (p != NULL)

     {

     ncount++;

     p = p + strlen("abcd");

     }

     else

     {

     break;

     }

     } while (*p!='\0');*/

     while (p = strstr(p,"abcd"))

     {

         ncount++;

         p = p + strlen("abcd");

         if (*p=='\0')

             break;

     }

     printf("ncount:%d\n", ncount);

     printf("hello...\n");

     system("pause");

     return ;

 }

 int getCount(char *mystr/*in*/,char *sub/*in*/, int *ncount)

 {

     int ret = ;

     int tmpCount = ;

     //初始化让p指针到查找的条件

     char *p = mystr;    //不要轻易改变形参的值

     if (mystr == NULL || sub == NULL || ncount == NULL)

     {

         ret = -;

         printf("func getCount() err:%d(mystr == NULL || sub || NULL || ncount == NULL)\n", ret);

         return ret;

     }

     while (p=strstr(p,sub))

     {

         tmpCount++;

         p = p + strlen(sub);

         if (*p=='\0')

             break;

     }

     *ncount = tmpCount;    //间接赋值是指针存在的意义

     return ret;

 }

 int main()

 {

     char *p = "abcd1234asd222abcd";

     /*char *sub;

     sub = "abcd";*/

     char sub[] = "abcd";

     int ncount=;

     int ret = ;

     ret = getCount(p,sub,&ncount);

     if (ret != )

     {

         printf("func getCount() err：\n", ret);

     }

     printf("ncount:%d\n", ncount);

     printf("hello...\n");

     system("pause");

     return ;

 }