C Questions

March 18, 2023

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Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/u797631661/domains/codermantra.com/public_html/wp-includes/formatting.php on line 449

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C Questions

1 / 15

1. What will be the output of the following C code considering the size of a short int is 2, char is 1 and int is 4 bytes?

        #include 

        int main()

        {

            short int i = 20;

            char c = 97;

            printf("%d, %d, %dn", sizeof(i), sizeof(c), sizeof(c + i));

            return 0;

        }

A. 2, 1, 2

B. 2, 1, 1

C. 2, 1, 4

D. 2, 2, 8

2 / 15

2. Which C keyword is used to extend the visibility of variables?

A. extend

B. extends

C. extern

D. auto

3 / 15

3. What will be the output of the following C code?

        #include 

        int main()

        {

            enum {ORANGE = 5, MANGO, BANANA = 4, PEACH};

            printf("PEACH = %dn", PEACH);

        }

A. PEACH = 3

B. PEACH = 4

C. PEACH = 5

D. PEACH = 6

4 / 15

4. What will happen if a header file is included in a program twice?

A. Program will throw an error

B. Program will throw an exception

C. Program will run normally

D. None of these

5 / 15

5. What will be the output of the following C code?

        #include 

        struct p

        {

            int k;

            char c;

            float f;

        };

        int p = 10;

        int main()

        {

            struct p x = {1, 97};

            printf("%f %dn", x.f, p);

        }

A. Compile time error

B. O.OOOOOO 1O

C. Somegarbage value 10

D. 0 10

6 / 15

6. Comment on the output of the following C code.

        #include 

        struct temp

        {

            int a;

            int b;

            int c;

        };

        main()

        {

            struct temp p[] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};

        }

A. No Compile time error, generates an array of structure of size 3

B. No Compile time error, generates an array of structure of size 9

C. Compile time error, illegal declaration of a multidimensional array

D. Compile time error, illegal assignment to members of structure

7 / 15

7. What will be the output of the following C program?

#include 

int main()
{
    int x[5] = { 10, 20, 30 };
    printf("%ld", sizeof(x)/sizeof(x[0]));
    return 0;
}

A. 3

B. 4

C. 5

D. 6

8 / 15

8. What will be the output of the following C code?

       #include 
        int main()
        {
            int i = 0;
            do
            {
               i++;
                if (i == 2)
                    continue;
                    printf("In while loop ");
            } while (i < 2);
            printf("%dn", i);

        }

A. In while loop 2

B. In while loop in while loop 3

C. In while loop 3

D. Infinite loop

9 / 15

9. What is storage class for variable A in below code?


int main()
{
int A;
A = 10;
printf("%d", A);
return 0;
}

A. extern

B. auto

C. register

D. static

10 / 15

10. Which of the following format specifiers is used to specify whether the given time is in AM or PM?

A. %P

B. %I

C. %X

D. %p

11 / 15

11. The following function computes the maximum value contained in an integer array p[] of size n (n >= 1)

int max(int *p, int n)
{
    int a=0, b=n-1;
    while (__________)
    {
        if (p[a] <= p[b])
        {
            a = a+1;
        }
        else
        {
            b = b-1;
        }
    }
    return p[a];
}

The missing loop condition is

A. a != n

B. b != O

C. b > (a+1)

D. b != a

12 / 15

12. What will be the output of the following code snippet?

#include 
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;
}

A. 2

B. 15

C. syntax error

D. 3

13 / 15

13. scanf() is a predefined function in______header file.

A. stdlib. h

B. ctype. h

C. stdio. h

D. stdarg. h

14 / 15

14. What is the disadvantage of arrays in C?

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

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

C. Elements are stred in contiguous memory blocks

D. Multiple other data structures can be implemented using array.

15 / 15

15. Which of the following is true for the static variable?

A. It can be called from another function

B. It exists even after the function ends

C. It can be modified in another function by sending it as a parameter

D. All of the mentioned

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