Computer Programming - MCQS

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Question 1

Which among the following is not an usage of structure?

Select one:

A. Changing the size of the cursor

B. Receiving a key from the keyboard

C. Placing the cursor at an appropriate position on screen

D. Drawing any graphics shape on the screen

E. None of the options

Correct Answer: E

Question 2

#include <stdio.h>

struct sample

{

                int a=0;

                char b='A';

                float c=10.5;

};

int main()

{

                struct sample s;

                printf("%d,%c,%f",s.a,s.b,s.c);

                return 0;

}

Select one:

A. No Error, No Output

B. 0, A, 10.5

C. Error

D. 0, A, 10.500000

Correct Answer: C

Question 3

What will be the output of the program ?

#include<stdio.h>

#include<string.h>

int main()

{

    char str1[20] = "Hello", str2[20] = " Program";

    printf("%s\n", strcpy(str2, strcat(str1, str2)));

    return 0;

}

Select one:

A. ProgramHello

B. Program

C. Hello Program

D. Hello

Correct Answer: C

Question 4

What will be the output of the program?

#include<stdio.h>

int main()

{

    static char s[25] = "C-Programming-skills";

    int i=0;

    char ch;

    ch = s[++i];

    printf("%c", ch);

    ch = s[i++];

    printf("%c", ch);

    ch = i++[s];

    printf("%c", ch);

    ch = ++i[s];

    printf("%c", ch);

    return 0;

}

Select one:

A. --Ps

B. C--s

C. C-Pr

D. -Pro

Correct Answer: A

Question 5

Which among the following is true about srtcmpi()?

Select one:

A. Compares two strings

B. Compares two strings with regard to case

C. Compares first n characters of two strings

D. Compares two strings without regard to case

Correct Answer: D

Question 6

Can you combine the following two statements into one?

char *p;

p = (char*) malloc(100);

Select one:

A. char p = *malloc(100);

B. char *p = (char *)(malloc*)(100);

C. char *p = (char) malloc(100);

D. char *p = (char*)malloc(100)

Correct Answer: D

Question 7

# include <stdio.h>

void print(int arr[])

{

   int n = sizeof(arr)/sizeof(arr[0]);

   int i;

   for (i = 0; i < n; i++)

   printf("%d ", arr[i]);

}

int main()

{

   int arr[] = {4,5,7,1,2,6,7,8};

   print(arr);

   return 0;

}

Select one:

A. 4,5,7,1,2,6,7,8

B. Compile error

C. Run time error

D. 4 5

Correct Answer: D

Question 8

#include<stdio.h>

int i;

int fun();

int main()

{

    while(i)

    {

        fun();

        main();

    }

    printf("Hello");

    return 0;

}

int fun()

{

    printf("Hi");

}

Select one:

A. Infinite loop

B. Hello

C. No output

D. Hi Hello

Correct Answer: B

Question 9

#include&lt;stdio.h&gt;

void fun(int*, int*);

int main()

{

int i=5, j=2;

fun(&amp;i, &amp;j);

printf(&quot;%d, %d&quot;, i, j);

return 0;

}

void fun(int *i, int *j)

{

*i = *i**i;

*j = *j**j;

}

Select one:

A. 2, 5

B. 25, 4

C. 5, 2

D. 10, 4

Correct Answer: B

Question 10

Find the odd man out in the following:

Select one:

A. N[i]

B. *N+i

C. *(i+N)

D. *(N+i)

Correct Answer: B

Question 11

What will be the output of the program?

#include<stdio.h>

    struct course

    {

        int courseno;

        char coursename[25];

    };

int main()

{

    struct course c[] = { {102, "Ruby"},

                          {103, "Scala"},

                          {104, "Python"}     };

    printf("%d ", c[1].courseno);

    return 0;

}

Select one:

A. 104

B. 102

C. 103

D. Error

Correct Answer: C

Question 12

int main()

{

    int i;

    int arr[5] = {1};

    for (i = 0; i < 5; i++)

    printf("%d ", arr[i]);

    return 0;

}

Select one:

A. 11111

B. error

C. 10000

D. 00000

Correct Answer: C

Question 13

How will you free the allocated memory ?

Select one:

A. delete(var-name);

B. free(var-name);

C. remove(var-name);

D. dalloc(var-name);

Correct Answer: B

Question 14

___________is a macro which returns a 0 if end of file is not reached.

Select one:

A. Feof()

B. Ferror()

C. Fscanf()

D. Fprintf()

Correct Answer: A

Question 15

Can we receive input from keyboard for the array of pointers to strings?

Select one:

A. Yes

B. Rarely

C. No

D. May be

Correct Answer: C

Question 16

Accessing array elements by pointers is _____________ faster than accessing them

by subscripts.

Select one:

A. Not

B. Always

C. Sometimes

D. Probably

Correct Answer: B

Question 17

Which among the following is the drawback of putch, putchar, fputchar()?

Select one:

A. Outputs only one character at a time

B. None of the above

C. Comes out of the screen

D. Outputs more than one character at a time

Correct Answer: A

Question 18

What will be the output of the program?

#include<stdio.h>

#include<string.h>

int main()

{

    char sentence[80];

    int i;

    printf("Enter a line of text\n");

    gets(sentence);

    for(i=strlen(sentence)-1; i >=0; i--)

    putchar(sentence[i]);

    return 0;

}

Select one:

A. The sentence will get printed in same order as it entered

B. The sentence will get printed in reverse order

C. Half of the sentence will get printed

D. None of above

Correct Answer: B

Question 19

#include <stdio.h>

int main()

{

    int arr[10];

    // Assume that base address of arr is 4000 and size of integer

    // is 32 bit

    arr++;

    printf("%u", arr);

    return 0;

}

Select one:

A. 4020

B. 4002

C. lvalue required

D. 4004

Correct Answer: C

.

Question 20

What is the output of the following program?

int main()

{

    int i;

    int arr[4] = {0};

    for (i = 0; i <= 4; i++)

    printf("%d ", arr[i]);

    return 0;

}

Select one:

A. crash

B. prints 0 four times 1

C. Error

D. The program may print 0 four times followed by garbage value, or may crash if address (arr+5) is invalid.

Correct Answer: D