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Author: chiuchiuuu

3.C++程序设计/week10(final)/MyString.cpp

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+#include <cstring>
+#include <cstdlib>
+#include <string>
+#include <iostream>
+using namespace std;
+
+// 在此处补充你的代码
+class MyString : public string
+{
+public:
+	MyString() :string() {}
+	MyString(char *str) :string(str) {}
+	MyString(string str) :string(str) {}
+	MyString(MyString &mystr) :string(mystr) {}
+	MyString operator()(int start, int length)
+	{
+		return this->substr(start, length);
+	}
+};
+
+int CompareString(const void * e1, const void * e2)
+{
+	MyString * s1 = (MyString *)e1;
+	MyString * s2 = (MyString *)e2;
+	if (*s1 < *s2)
+		return -1;
+	else if (*s1 == *s2)
+		return 0;
+	else if (*s1 > *s2)
+		return 1;
+}
+
+int main()
+{
+	MyString s1("abcd-"), s2, s3("efgh-"), s4(s1);
+	MyString SArray[4] = { "big","me","about","take" };
+	cout << "1. " << s1 << s2 << s3 << s4 << endl;
+	s4 = s3;
+	s3 = s1 + s3;
+	cout << "2. " << s1 << endl;
+	cout << "3. " << s2 << endl;
+	cout << "4. " << s3 << endl;
+	cout << "5. " << s4 << endl;
+	cout << "6. " << s1[2] << endl;
+	s2 = s1;
+	s1 = "ijkl-";
+	s1[2] = 'A';
+	cout << "7. " << s2 << endl;
+	cout << "8. " << s1 << endl;
+	s1 += "mnop";
+	cout << "9. " << s1 << endl;
+	s4 = "qrst-" + s2;
+	cout << "10. " << s4 << endl;
+	s1 = s2 + s4 + " uvw " + "xyz";
+	cout << "11. " << s1 << endl;
+	qsort(SArray, 4, sizeof(MyString), CompareString);
+	for (int i = 0; i < 4; i++)
+		cout << SArray[i] << endl;
+	//s1的从下标0开始长度为4的子串
+	cout << s1(0, 4) << endl;
+	//s1的从下标5开始长度为10的子串
+	cout << s1(5, 10) << endl;
+	return 0;
+}