TCS NQT Questions on Loops Quiz– 1

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

Hello

world

world

compile time error

compile time error

none

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

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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 display hello

It will throw an error

It will throw an error

No Output

No Output

Depends on Compiler

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

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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

hi

how are you

how are you

hello

hello

hihello

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

break

exit(0)

exit(0)

abort()

abort()

all of the mentioned

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)

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

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

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

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

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

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B

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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; i >= 0; i--)

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

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

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

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

Compile time error

Hello is printed thrice

Hello is printed thrice

Nothing

Nothing

Varies

Varies

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

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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

Run time error

Hello is printed thrice

Hello is printed thrice

Hello is printed twice

Hello is printed twice

Hello is printed infinitely

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

Inside while loop Outside loop

Inside while loop Outside loop

Outside loop

Outside loop

Infinite 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);
}

Inside while loop will be printed thrice.

Inside while loop will be printed thrice.

Outside while loop

Outside while loop

Depends on the compiler

Depends on the compiler

Compile time error

Compile time error

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["0","40","60","80","100"]
["Need more practice!","Keep trying!","Not bad!","Good work!","Perfect!"]

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