Code Quiz

What is the output of the following program?

#include<stdio.h>

main()
{ 
   int a[3] = {2,1};
   
   printf("%d", a[a[1]]); 
}

A - 0

B - 1

C - 2

D - Syntax Error

What is the output of the following program?

#include<stdio.h>

main()
{
   int I = 1;
   
   while(i++<=5);
       printf("%d ",i++);
}

A - 4

B - 6

C - 2 6

D - 2 4

Does both the loops in the following programs prints the correct string length?

 

#include<stdio.h>

main()
{
   int i;
   char s[] = "hello";

   for(i=0; s[i]; ++i);
      printf("%d ", i);

   i=0; 
   while(s[i++]);
      printf("%d ", i);
}

A - Yes, both the loops prints the correct length

B - Only for loop prints the correct length

C - Only while loop prints the correct length

D - Compile error in the program.

 

Predict the output of the following code segment:

// Add stdio.h header file in below code

int main()
{
int number1 = -17;
int number2 = -5;
int result = number1 % number2;
printf("%d",result);
return 0;
}

A - 2

B - -2

C - 3,4

D - -3,4

// Add stdio.h header file in below code

int  main() 
{ 
unsigned int a = -1; 
int b = ~0; 
int result;
if (b == a)
printf("equal");
else
printf("unequal"); 
return 0; 
}

A - Equal

B - Unequal

C - 0 

D - Compile Error

Examine the following code. How many times will the nested loop run?

 

for (int I = 1; i<=3; i++) {

for (int j  = 1; j <= I; j++) {

}

 

A - 3

 

B - 6

 

C - 1

 

D - 9

 

What is the time complexity of following code:

 

Which of these best describes an array?

 

A. A data structure that shows a hierarchical behavior
B. Container of objects of mixed types
C. Container of objects of similar types
D. All of the mentioned

What is the output of the following piece of code?

 

public class array
  {
    public static void main(String args[])
    {
     int []arr = {1,2,3,4,5};
     System.out.println(arr[5]);
    }
}

A. 4
B. 5
C. ArrayIndexOutOfBoundsException
D. InavlidInputException

Which of the following don’t use matrices?

 

A - In solving linear equations
B -  Image processing
C -  Graph theory
D - Sorting numbers

What is the order of a matrix?

 

A - number of rows multiplied number of columns
B - number of columns multiplied number of rows
C - number of rows multiplied number of rows
D - number of columns multiplied number of columns