C Pointers Test 1

The correct option is (b).

Explanation:

For a structure, Arrow ( ->) is used for access the data using pointer variable and Dot(.) operator can be used for accessing the data using normal structure variable.

The correct option is (a).

Explanation:

For the array element a[i][j] the pointer expression is *(*(a+i)+j)

For the array element a[i][j][k] the pointer expression is *(*(*(a+i)+j)+k)

For the array element a[i][j][k][2] the pointer expression is *(*(*(*(a+i)+j)+k)+2)

The correct option is (b).

Explanation:

++*ptr increments the value pointed by ptr and*ptr++ increments the pointer not the value.

The correct option is (a).

Explanation:

The below code is a prototype of malloc() function, here ptr indicates the pointer.

In below code, "*p" is a pointer of data type char and malloc() function is used for allocating the memory for char.

The correct option is (d).

Explanation:

The size of int and unsigned data type is same therefore there is no problem in a C statement:

signed int *p=(int*)malloc(sizeof(unsigned int));