C Language Test - 2

What is the range of values that can be stored by int datatype in C?

• -(2^31) to (2^31) - 1

• -256 to 255

• -(2^63) to (2^63) - 1

• 0 to (2^31) - 1

What will be the output of the following code snippet?

#include <stdio.h>

int main() {

        int a = 3, b = 5;

        int t = a;

        a = b;

        b = t;

        printf("%d %d", a, b);

        return 0;

}

• 3 5

• 3 3

• 5 5

• 5 3

How is an array initialized in C language?

• int a[3] = {1, 2, 3};

• int a = {1, 2, 3};

• int a[] = new int[3]

• int a(3) = [1, 2, 3];

What is the output of the following code snippet?

#include <stdio.h>

int main() {

        int a[] = {1, 2, 3, 4};

        int sum = 0;

        for(int i = 0; i < 4; i++) {

            sum += a[i];

        }

        printf("%d", sum);

        return 0;

}

• 1

• 4

• 20

• 10

What is the output of the following code snippet?

int main() {

        int sum = 2 + 4 / 2 + 6 * 2;

        printf("%d", sum);

        return 0;

}

• 2

• 15

• 16

• 18

How is the 3rd element in an array accessed based on pointer notation?

• *a + 3

• *(a + 3)

• (a + 3)

• &(a + 3)

How are String represented in memory in C?

• An array of characters.

• The object of some class.

• Same as other primitive data types.

• LinkedList of characters.

What will be the output of the following code snippet?

#include <stdio.h>

void solve() {

    int a[] = {1, 2, 3, 4, 5};

    int sum = 0;

    for(int i = 0; i < 5; i++) {

        if(i % 2 == 0) {

            sum += *(a + i);

        }

        else {

            sum -= *(a + i);

        }

    }

    printf("%d", sum);

}

int main() {

        solve();

        return 0;

}

• 2

• 15

• Syntax Error

• 3

What will be the output of the following code snippet?

#include <stdio.h>

void solve() {

    int first = 10, second = 20;

    int third = first + second;

    {

        int third = second - first;

        printf("%d ", third);

    }

    printf("%d", third);

}

int main() {

        solve();

        return 0;

}

• 10 30

• 30 10

• 10 20

• 20 10

What is the disadvantage of arrays in C?

• The amount of memory to be allocated should be known beforehand.

• Elements of an array can be accessed in constant time.

• Elements are stored in contiguous memory blocks.

• Multiple other data structures can be implemented using arrays.