TCS NQT Questions on Loops Quiz

Question 1

Time: 00:00:00

The output of the code below is ?

#include <stdio.h>

int a;

void main()

{

   if (a)

     printf(“Hello”);

   else

     printf(“world”);

}

Hello

world

compile time error

none

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Global variables are automatically initialized to 0.

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A. Hello

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the correct answer is none

Question 2

Time: 00:00:00

The output of the code below is



#include <stdio.h>

void main()

{

   int a = 5;

   if (true);

     printf(“hello”);

}

It will display hello

It will throw an error

No Output

Depends on Compiler

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If condition shouldn’t end with semicolon

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\"true\" is taken as an undeclared variable by the compiler thus it shows an error.

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B

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B Error

Question 3

Time: 00:00:00

The output of the code below is

#include <stdio.h>

void main()

 {

   int a = 0;

   if (a == 0)

     printf(“hi”);

   else

     printf(“how are u”);

   printf(“hello”);

}

hi

how are you

hello

hihello

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Question 4

Time: 00:00:00

The following code ‘for(;;)’ represents an infinite loop. It can be terminated by.

break

exit(0)

abort()

all of the mentioned

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Question 5

Time: 00:00:00

The correct syntax for running two variable for loop simultaneously is.

a) for (i = 0; i < n; i++) for (j = 0; j < n; j += 5)

for (i = 0, j = 0;i < n, j < n; i++, j += 5)

for (i = 0; i < n;i++){}

for (j = 0; j < n;j += 5){}

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B

Question 6

Time: 00:00:00

Which for loop has range of similar indexes of ‘i’ used in

for (i = 0;i < n; i++) ?

for (i = n; i>0; i--)

for (i = n; i >= 0; i--)

for (i = n-1; i>0; i--)

for (i = n-1; i>-1; i--)

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Question 7

Time: 00:00:00

The output of this C code is?



#include <stdio.h>

void main()

{

  int x = 0;

  for (x < 3; x++)

   {

      printf(“Hello”);

   }

}

Compile time error

Hello is printed thrice

Nothing

Varies

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for (;x < 3; x++) ; need

Question 8

Time: 00:00:00

The output of this C code is?



#include <stdio.h>

void main()

{

  double x = 0;

  for (x = 0.0; x < 3.0; x++)

     printf(“Hello”);

}

Run time error

Hello is printed thrice

Hello is printed twice

Hello is printed infinitely

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Question 9

Time: 00:00:00

The output of this C code is?



#include <stdio.h>

int main()

{

  do{

    printf(“Inside while loop “);

    }while (0);

printf(“Outside loop\n”);

}

Inside while loop

Inside while loop Outside loop

Outside loop

Infinite loop

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Question 10

Time: 00:00:00

The output of this C code is?



#include <stdio.h>

int main()

{

  int i = 0;

  do {

       i++;

       printf(“Inside while loop\n”);

     } while (i < 3);

}