#include<stdio.h>
#include<string.h>
int count_chars(char const*str,char const*chars)
{
	int a=strlen(str);
	int b=strlen(chars);
	printf("%d   %d\n",a,b);
	int i,j;
	int count=0;
	for(i=0;i<b;i++,chars++)
		for(j=0;j<a;j++,str++)
			if(*str==*chars)
			count++;
	return count;
}

int main()
{
char a[]="chen";
char b[]="chenlinlin";
int count=count_chars(b,a);
printf("%d\n",count);
return 0;
}