Pointers

Comment on the output of this C code?

int main()
{
int a = 10;
int **c -= &&a;
}

What is the output of this C code?

int *f();
int main()
{
int *p = f();
printf("%d\n", *p);
}
int *f()
{
int *j = (int*)malloc(sizeof(int));
*j = 10;
return j;
}

What will be the output of the following C code?

#include 
    int main()
    {
        int i = 10;
        int *const p = &i;
        foo(&p);
        printf("%d\n", *p);
    }
    void foo(int **p)
    {
        int j = 11;
        *p = &j;
        printf("%d\n", **p);
    }

Can you combine the following two statements into one?

char *p;
p = (char*) malloc(100);

What will be the output of the program if the size of pointer is 4-bytes?

#include

int main()
{
    printf("%d, %d\n", sizeof(NULL), sizeof(""));
    return 0;
}

Which of the following statements correctly declare a function that receives a pointer to pointer to a pointer to a float and returns a pointer to a pointer to a pointer to a pointer to a float?

What is the output of this C code?

void main()
{
int a[3] = {1, 2, 3};
int *p = a;
int **r = &p;
printf("%p %p", *r, a);
}

What is the output of this C code?

int main()
{
int *ptr, a = 10;
ptr = &a;
*ptr += 1;
printf("%d,%d/n", *ptr, a);
}

What will be the output of the program assuming that the array begins at the location 1002 and size of an integer is 4 bytes?

#include

int main()
{
    int a[3][4] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 };
    printf("%u, %u, %u\n", a[0]+1, *(a[0]+1), *(*(a+0)+1));
    return 0;
}

What will be the output of the following C code?

#include 
    void foo(int*);
    int main()
    {
        int i = 10;
        foo((&i)++);
    }
    void foo(int *p)
    {
        printf("%d\n", *p);
    }