Spoken Tutorial C test answer

1)  In the following statements, what does 6 specify?

 int num[6];
 num[6]=21;

Select one:

In the first statement, 6 specifies a particular element, whereas in the second statement it specifies an array size.

In the first statement, 6 specifies a particular element, whereas in the second statement it specifies a type.

In both the statements, 6 specifies an array size.

In the first statement, 6 specifies an array size, whereas in the second statement it specifies a particular element of an array.

2) What will be the output of the following program?

#include<stdio.h>
 int main()
 {
     char j=1;
     while(j < 5)
     {
         printf("%d, ", j);
         j = j+1;
     }
     printf("\n");
     return 0;
 }

Select one:

1 2 3 4

1, 2, 3, 4,

4, 3, 2, 1

2 3 4 5 6

3) What will be output when you will execute following c code?

 

#include<stdio.h>

void main(){

    int a=5,b=10;

    if(a < b)

         printf("%d  %d",++a,b++);

    else

         printf("John Terry");

}

Select one:

John Terry

6  11

5  10

6  10

4) Which of the following special symbols is allowed in a variable name?

Select one:

: (colon)

| (pipe)

_ (underscore)

- (hyphen)

5) Which of the following is NOT a logical operator?

Select one:

&

||

&&

!

6) What is the format specifier for double data-type?

Select one:

%c

%dd

%d

%lf

7) Which of the following is a derived datatype?

Select one:

float

char

array

double

8) What will be output when you execute the following C code?

 

#include<stdio.h>

void main(){

    int a=5,b=10,c=1;

    if(a+b>c+b){

         printf("cquestionbank");

    }

    else{

         break;

    }

}

Select one:

cquestionbank

It will print nothing

Compilation error

Run time error

None of these

9) What will be the output of the following C program?

#include <stdio.h>
int main()
{
 char star[10]="HelloWorld";
 printf("%c\n",star[5]);
 return 0;
}

Select one:

W

w

e

Error

10) Which of the following is used to execute a group of statements repeatedly?

Select one:

switch

while

if

struct

11) What will be the output of the following program?

#include<stdio.h>
 
 int addmult(int ii, int jj)
 {
     int kk, ll;
     kk = ii + jj;
     ll = ii * jj;
     return (kk, ll);
 }
 
 int main()
 {
     int i=3, j=4, k, l;
     k = addmult(i, j);
     l = addmult(i, j);
     printf("%d %d", k, l);
     return 0;
 }


Select one:

12 12

None of above

Error: Compile error

No error, No output

12) What is the purpose of namespace?

Select one:

To avoid name collisions

To group functions

To create an object

To execute a program

13) Which of the following operators will give the remainder after dividing 3 by 2?

Select one:

%

+

/

-

14) What will be the output of the following C program?

#include<stdio.h>
 int sumdig(int);
 int main()
 {
     int a, b;
     a = sumdig(123);
     b = sumdig(123);
     printf("%d, %d", a, b);
     return 0;
 }
 int sumdig(int n)
 {
     int s, d;
     if(n!=0)
     {
         d = n%10;
         n = n/10;
         s = d+sumdig(n);
     }
     else
         return 0;
     return s;
 }

Select one:

6, 6

4, 4

3, 3

12, 12

15) What will be the output of the following program?

#include<stdio.h>
 int check(int);
 int main()
 {
     int i=45, c;
     c = check(i);
     printf("%d", c);
     return 0;
 }
 int check(int ch)
 {
     if(ch >= 45)
         return 100;
     else
         return 10;
 }

Select one:

1

10

100

0

16) Which of the following format specifiers is used to provide exactly 4 digits after decimal point?

Select one:

.%4f

%f4

%4f

%.4f

17) In the following program, how many times will the for loop execute?

#include<stdio.h>
 int main()
 {
     int i=5;
     for(;scanf("%d", &i); printf("%d", i));
     return 0;
 }

Select one:

The for loop will execute 5 times

The for loop will execute infinite times

The for loop will execute only once

The for loop will not execute at all

18) What will be the output of the following C program?

#include<stdio.h>
int main()
{
    char str1[] = "Hello";
    char str2[] = "Fellow";
    if(str1[2] == str2[3])
        printf("Equal");
    else
        printf("Unequal");
    return 0;
}

Select one:

Unequal

Error

Equal

None of these

19) What is the output of the following statement?

x=y=z=0;

Select one:

The statement is incorrect

x=0, y=0, z=0

x=0, y=NULL, z=NULL

x=0, y=1, z=2

20) What will be the output of the following program?

#include<stdio.h>
 int main()
 {
     int i=3;
     switch(i)
     {
         case 1:
             printf("Hello");
         case 2:
             printf("Hi");
         case 3:
             continue;
         default:
             printf("Bye");
     }
     return 0;
 }

Select one:

. No output

. Bye

. Compilation Error

. Hello Hi

21) Which of the following statements should NOT be used to increase the value of c by 1?

Select one:

c + 1 => c;

c += 1

c++;

c = c + 1;

22) Which function is used to print a message on the terminal or command prompt in C?

Select one:

cout <<;

Printf()

prntf

printf();

23) Point out the error line in the following program.

1. #include<stdio.h>
2. int main()
3. {
4.     int i=1,j=1;
5.     if(i=j)
6.     {
7.         printf("i=j");
8.     }
9.     else
10.     {
11.         printf("Not Equal");
12.     }
13. }

Select one:

Line number 4

None of these

Line number 5

Line number 7

24) Point out the error line in the following program.

1.   #include<stdio.h>
2.   int main()
3.   {
4.       int i=1;
5.       for(;;)
6.          {
7.           printf("%d\n", i++);
8.           if(i>10)
9.           break;
10.        }
11.  return 0;
12.  }

Select one:

Line number 8

None of these.

Line number 5

Line number 4

Question 25

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Which of the following structure(s) is/are correct?  Tick all correct answer(s)  No partial marks and no negative marks.

Select one or more:

struct aa
 {
     int a;
     float b;
     struct aa *var;
 };

struct aa
 {
     int a;
     float b;
 };

struct aa
 {
     int a;
     float b;
     struct aa var;
 };

Question 26

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Which of the following statement(s) is/are correct?  Tick all correct answer(s).  No partial marks and no negative marks.

-------------------------------------------------------------------------------------------------------------------------------

Select one or more:

the actual body of the function can be defined separately

function declaration tells the compiler how to call the function

function declaration tells the compiler about a function name

function cannot return a structure

Question 27

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Which of the following function(s) can NOT be used to find the length of a string? 

Tick all correct answer(s).  No partial marks and no negative marks.

Select one or more:

int xstrlen(char *s)
 {
     int length=0;
     while(*s!='\0')
     {    length++; s++; }
     return (length);
 }

int xstrlen(char *s)
 {
     int length=0;
     while(*s!='\0')
         length++;
     return (length);
 }

int xstrlen(char *s)
 {
     int length=0;
     while(*s!='\0')
         s++;
     return (length);
 }

int xstrlen(char s)
 {
     int length=0;
     while(*s!='\0')
         length++; s++;
     return (length);
 }

Question 28

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Select the missing code lines from the dropdown provided.

The C code given below should check whether the number entered by the user is Negative, Positive or Zero.
But, line numbers 9 and 11 are missing.

1. #include <stdio.h>
2. int main()
3. {
4.     int num;
5.     printf("Enter a number: ");
6.     scanf("%d",&num);
7.     if (num<0)
8.       printf("%d is negative.",num);
9.     ---------------Missing code -------------------
10.       printf("%d is positive.",num);
11.   ---------------Missing code -------------------
12.       printf("You entered zero.");
13.     return 0;
14. }

Line 9	Answer 1Choose...{}scanf("%d is positivetive",&num);scanf("%d is negative",&num);else ifelse if (num>0)elsescanf("%d",&num);
Line 11	Answer 2Choose...{}scanf("%d is positivetive",&num);scanf("%d is negative",&num);else ifelse if (num>0)elsescanf("%d",&num);

Question 29

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Select the missing code lines from the dropdown provided.

The  C code given below should find the square of a given number.

But, line numbers 4 and 6 are missing.

 

1. #include<stdio.h>
2. int main()
3. {
4. ---------------Missing code -------------------
5. printf("Enter the number\n");
6. ---------------Missing code -------------------
7. printf("Square of %d is %d \n", num, num*num);
8. return 0;
9. }

Line 4	Answer 1Choose...int num;scanf("%d", &num);printf("The number is num");num = num*num;
Line 6	Answer 2Choose...int num;scanf("%d", &num);printf("The number is num");num = num*num;

Question 30

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Select the missing code lines from the dropdown provided.

The C code given below should check whether the number entered by the user is odd or even.
But, line numbers 7 and 11 are missing.

1. #include<stdio.h>
2. int main()
3. {
4.     int num;
5.     printf("Enter a number\n");
6.     scanf("%d", &num);
7.     ---------------Missing code -------------------
8.     {
9.         printf("%d is an even number\n", num);
10.     }
11.     ---------------Missing code -------------------
12.     {
13.     printf("%d is an odd number\n", num);
14.     }
15.     return 0;
16. }

Line 7	Answer 1Choose...else(num%2==0)if(num/2==0)else if(num)if(num>0)if(num%2 == 0)else if(num==0)elsenum=0;num++
Line 11	Answer 2Choose...else(num%2==0)if(num/2==0)else if(num)if(num>0)if(num%2 == 0)else if(num==0)elsenum=0;num++

Question 31

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What will be the output of the program? Type the answer with the correct case.

#include<stdio.h>
 int main()
 {
   char str[6] = "India ";
   printf("%s",str);  
   return 0;
 }

Answer: 

Question 32

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What will be the output of the program?  Write the answer in digits not alphabets.

#include<stdio.h>
#include<string.h>
int main()
{
  char arr[] = "456123";
  int len = strlen(arr);
  printf("%d", len);
  return 0;
}

Answer: