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Pointer of C language (3)

2022-07-22 09:19:00 【fksfdh】

3、 ... and 、 Array pointers and two-dimensional arrays

int main()
{
    
    // Array pointer 
    int(*p)[4];
    int a[3][4] = {
    1,2,3,4,5,6,7,8,9,10,11,12};

    p = a;

    printf("sizeof(p)=%d\n",sizeof(p) );
    printf("sizeof(a)=%d\n", sizeof(a));
	//*(p+1)  amount to  p[1]
    printf("*(p + 1)[1] = %d\n", *(p+1)[1]);  // amount to *(p+1+1) and p[2]
    //printf("&a + 1 = %x",&a + 1); &a Represents the entire array  

    // Take out the numbers 6
    printf("a[1][1] = %d\n", a[1][1]);
    printf("p[1][1] = %d\n", p[1][1]);
    printf("*(*(p+1)+1) = %d\n", *(*(p+1)+1));
    printf("*(p[1]+1) = %d\n", *(p[1]+1));
    printf("*(&a[1][1]) = %d\n", *(&(a[1][1])));

    

    return 0;
}