ARRAYS IN C

Array can be considered as set of elements stored in consecutive memory locations but having __________.

• Same data type

• Different data type

• Same scope

• None of these

What is the maximun number of dimensions an array in C may have?

• Two

• Eight

• Sixteen

• Theoratically no limit. The only practical limits are memory size and compilers

What will happen if in a C program you assign a value to an array element whose subscript exceeds the size of array?

• The element will be set to 0.

• The compiler would report an error.

• The program may crash if some important data gets overwritten.

• The array size would appropriately grow.

What is the output of C Program.?

int main()

{

int a[];

a[4] = {1,2,3,4};

printf("%d", a[0]);

}

• 1

• 2

• 4

• Compiler Error

What is the output of C Program.?

int main()

{

int a[] = {1,2,3,4};

int b[4] = {5,6,7,8};

printf("%d,%d", a[0], b[0]);

}

• 1,5

• 2,6

• 0 0

• Compiler error

What is the output of C Program.?

int main()

{

int a[3] = {10,12,14};

a[1]=20;

int i=0;

while(i<3)

{

printf("%d ", a[i]);

i++;

}

}

• 20 12 14

• 10 20 14

• 10 12 20

• Compiler error

What is the output of C Program.?

int main()

{

int a[3] = {20,30,40};

a[0]++;

int i=0;

while(i<3)

{

printf("%d ", i[a]);

i++;

}

}

• 20 30 40

• 41 30 20

• 21 30 40

• None of the above

What will be the output of the following C code?

#include <stdio.h>

void main()

{ int a[2][3] = {1, 2, 3, 4, 5};

int i = 0, j = 0;

for (i = 0; i < 2; i++)

for (j = 0; j < 3; j++)

printf("%d", a[i][j]); }

• 1 2 3 4 5 0

• 1 2 3 4 5 junk

• 1 2 3 4 5 5

• Run time error

Predict output of the following program:

int main()

{

int a[][] = {{1,2},{3,4}};

int i, j;

for (i = 0; i < 2; i++)

for (j = 0; j < 2; j++)

printf("%d ", a[i][j]);

return 0;

}

• 1 2 3 4

• Compiler Error in line ” int a[][] = {{1,2},{3,4}};”

• 4 garbage values

• 4 3 2 1

Size of the array need not be specified, when

• Initialization is a part of definition

• It is a formal parameter

• It is a declaration

• All of the above