定义字符数组char 和int 定义的方法

Question

为什么第一个是对的呢我记得定义三种模式没这一种啊第二个为什么是错的呢

Answer 1

字符串字面常量只能初始化相应类型字符数组

char str[] = "abc"; // str has type char[4] and holds 'a', 'b', 'c', '\0'
wchar_t wstr[4] = L"猫"; // str has type wchar_t[4] and holds L'猫', '\0', '\0', '\0'
char str[3] = "abc"; // str has type char[3] and holds 'a', 'b', 'c'

所有类型的数组（包括字符数组）都可以用花括号来初始化

int x[] = {1,2,3}; // x has type int[3] and holds 1,2,3
int y[5] = {1,2,3}; // y has type int[5] and holds 1,2,3,0,0
int z[3] = {0}; // z has type int[3] and holds all zeroes

https://en.cppreference.com/w/c/language/array_initialization