1 char a[] = { 'c','+','+' };
2 char c[] = "c++";
3 cout << strlen(a) << endl;
4 cout << strlen(c) << endl;
5 cout << sizeof(a) << endl;
6 cout << sizeof(c) << endl;
运行结果：
随机数
3
3
4
随机数产生的原因：
标签：cout,C++,char,随机数,sizeof,strlen From： https://www.cnblogs.com/jiayu-code/p/16739377.html