#include<iostream>
#include<string>
#include<cstring>
using namespace std;
const n=100;
const m=50;

int stringmatch(char ch1[],char ch2[])
{
	int i,j;
	for(i=0;i<n-m;)
	{
		j=0;
		while(j<m&&ch2[j]==ch1[i+j])
		{
			j=j+1;
			if(j=m)
				return i;
		}
	return 0;
	}
}

void main()
{
	int k;
	char c1[n];
	char c2[m];
	cout<<"请输入第一串字符："<<endl;
	cin.getline(c1,n-1);
	cout<<"第一串字符为："<<c1<<endl;
	cout<<"请输入第二串字符："<<endl;
	cin.getline(c2,m-1);
	cout<<"第二串字符为："<<c2<<endl;
	k=stringmatch(c1,c2);
	if(k==-1)
		cout<<"匹配失败!"<<endl;
	else
		cout<<k<<endl;
}