字符串

字符串本质上是字符数组

char a[] = {"H","e","l","l","o",\0}；

char *s = "Hello";
这里的s实际上是const char *s

char *不一定是字符串，也有可能是指向字符的指针

字符串的输入和输出

char string[8];

scanf("%7s", string);