题解 | 比较字符串大小

#include <iostream>
using namespace std;

int mystrcmp(const char* src, const char* dst);

int main()
{
	char s1[100] = { 0 };
	char s2[100] = { 0 };
	cin.getline(s1, sizeof(s1));
	cin.getline(s2, sizeof(s2));
	cout << mystrcmp(s1, s2);
	return 0;
}

int mystrcmp(const char* src, const char* dst)
{
	while (*src && *src == *dst)
	{
		src++;
		dst++;
	}
	int i = *(const unsigned char*)src - *(const unsigned char*)dst;
	return i > 0 ? 1 : (i == 0 ? 0 : -1);
}