整數

int a = 10;

浮點數

double a = 10.0;

字串

const char *cs = "abcdefg";
char *s = "abcdefg"; // 編譯器會發出警告,這和c++記憶體模型有關

陣列

int array[] = {1,2,3,4,5};
const int carray[5] = {1,2,3,4,5};

結構初始化

struct People{
    int age;
    const char *name;
};

struct People p = { 10, "sean" };

指標初始化

int a = 10;
int *b = &a;