day-14 代码

函数指针查找剩余子串

char* match(char* ch, char c);

int main()
{
	char ch[50], c, * p;
	int pos = 0;
	cin.getline(ch, 20);
	cin >> c;
	p = match(ch, c);
	if (p)
	{
		pos = strlen(ch) - strlen(p) + 1;
		cout << "sizeof(ch)=" << sizeof(ch);
		cout << ", sizeof(p)=" << sizeof(p) << endl;
		cout << "p=" << p << ",pos=" << pos << endl;
	}
	else
	{
		cout << "no match found\n";
	}

	cout << endl;
	return 0;
}

char* match(char* ch, char c)
{
	int count = 0;
	while (c != ch[count] && ch[count] != '\0')
		count++;
	if (ch[count])
	{
		return &ch[count];
	}
	return nullptr;
}
/*
input:
this is a word
o

output:
sizeof(ch)=50, sizeof(p)=4
p=ord,pos=12

*/