指针转化为数组

int a[3];
int* q = (int*)malloc(3 * sizeof(int));	//相当于q[3]

//动态分配一个数组，每个元素都是char* //char* buf[3]
int n = 3;
char** buf = (char**)malloc(n * sizeof(char*)); //相当于char* buf[3]
for (int i = 0; i < n; i++)
{
	buf[i] = (char*)malloc(30 * sizeof(char));
}int a[3];
int* q = (int*)malloc(3 * sizeof(int)