C++ Primer-string和char

string是类，是可变长的字符序列，是容器。

char是字符，是内置类型。

大小比较：

string：

 1 #include <iostream>
 2 #include <string>
 3 using namespace std;
 4 int main()
 5 {
 6     string str1 = "A string example";
 7     string str2 = "A different string";
 8     if (str1 < str2)
 9         cout << "str1 is smaller than str2" << endl;
10     else if (str1 > str2)
11         cout << "str1 is bigger than str2" << endl;
12     else
13         cout << "str1 is equal to str2" << endl;
14     system("pause");
15     return 0;
16 }
View Code

char：

 1 #include <iostream>
 2 #include <string>
 3 #include <vector>
 4 #include <cstring>
 5 using namespace std;
 6 int main()
 7 {
 8     const char ca1[] = "A string exmaple";
 9     const char ca2[] = "A different string";
10     if (strcmp(ca1, ca2) < 0)
11         cout << "ca1 is smaller than ca2" << endl;
12     else if (strcmp(ca1, ca2) == 0)
13         cout << "ca1 is  equal to ca2" << endl;
14     else
15         cout << "ca1 is bigger than ca2" << endl;
16     system("pause");
17     return 0;
18 }
View Code

 

posted @ 2018-09-09 15:41  archerzon  阅读(97)  评论(0)  编辑  收藏  举报