TCS NQT Array Quiz- 1

Answer : (A)

EXPLANATION :

All elements refer to the same name.That is each element can be identified with the same name including different index value(subscript value). Hence,an array is also called as a Subscripted variable.

Answer : (B)

EXPLANATION :

when we don't assign any value to the element, so the variable fills it as a garbage value.

Answer : (B)

EXPLANATION :

When array is initialized it automatically takes the dimension based on the initialization.

Suppose : a[][] = {{1,2,3}{4,5,6},{7,8,9}};

Automatically it will take the dimension as 3 number of rows and 3 number of coloumns.

Answer :: (C)

EXPLANATION :

The program may crash if some important data get's overwritten.

Example : Consider the following program :

void main( )

{

int a[10]={0};

a[15] = 65;

printf("%d",&a[15]);

}
When we compile this code we get some garbage value it just simply crash the values,based on the type of compiler the garbage value may vary.

Answer : (C)

EXPLANATION :

None of the available options are correct as none of the options are equivalent.

Answer : (A)

EXPLANATION :

In a two dimension array it is mandatory to mention the dimension of column as on the basis of column it will take the dimension of the row so it is necessary to mention the second dimension.

An array can be passed to a function by both Call by value as well as call by reference.

We get compile time error because of line k=arr;

As we can't assign array arr to k in this manner.

k = ++b[1],    k = 2
l = b[1]++,      l = 2
m = b[k++],  m = 32, k = 3

print -> k, l, m = 3, 2, 32

Answer :(A)

EXPLANATION :

int c[3][4] = {1, 2, 3, 4, 4, 3, 2, 1, 7, 8, 9, 0}; The array c[3][4] is declared as an integer array having the 3 rows and 4 colums dimensions.

printf("%u, %u\n", c+1, &c+1);

The base address(also the address of the first element) of array is 65472.
For a two-dimensional array like a reference to array has type "pointer to array of 4 ints". Therefore, c+1 is pointing to the memory location of first element of the second row in array c. Hence 65474 + (4 ints * 2 bytes) = 65482.

Then, &c has type "pointer to array of 3 arrays of 4 ints", totally 12 ints. Therefore, &c+1 denotes "12 ints * 2 bytes * 1 = 24 bytes".
Hence, begining address 65474 + 24 = 65496. So, &c+1 = 65498.

Answer :: (A)

EXPLANATION :

As we know the array index starts at 0

Since we are using pre-increment addition operator so value of i will be increased to 1 and garbage value will be stored at 0th index and 1,2,3,4 at the 1st,2nd,3rd and 4th index.

Answer : (A)

EXPLANATION :

The size of the float array is 16 bytes and the size of each float element is 4 bytes.