ktlt-lab8.3

#include<iostream>
#include<string>
#include<stdio.h>

using namespace std;
int main() {
	int a1, a2;
	char s1[20], s2[20];
	cout << "nhap chuoi hien tai =" << endl;
	cin >> s1;
	cout << "nhap chuoi con =" << endl;
	cin >> s2;
	cout << strlen(s1) - strlen(strstr(s1, s2));
	system("pause");
}