#include <conio.h>

 #include <stdio.h>

 #include <string.h>

 #include <stdlib.h>

 int fun(char *str, char *substr)

 {

     char *z, *c;

     z = str;

     c = substr;

     int n=;

     while (*z!='\0')

     {

         if (*z== *c)

         {

             z++; c++;

             if (*z == *c)

             {

                 n++;

             }

             c--;

         }

         else

         {

             z++;

         }

     }

     return n;

 }

 void main()

 {

   FILE *wf;

   char str[],substr[];

   int n;

   system("CLS");

   printf("输入主字符串: ");

   gets(str);

   printf("输入子字符串: ");

   gets(substr);

   puts(str);

   puts(substr);

   n=fun(str,substr);

   printf("n=%d\n ",n);

 /******************************/

   wf=fopen("out.dat","w");

   n=fun("asd asasdfg asd as zx67 asd mklo","as");

   fprintf(wf,"%d",n);

   fclose(wf);

 /*****************************/

 }