TCS Loops Questions Quiz-1

Question 1

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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it is not possible any semicolon here as i is not any declreatiob

When you execute this program on C window. It will shown an error and it will be throwed

first, you must declare true

it will throw an error cause \"true\" is not a keyword in c. So \"true\" is considered as the undeclared identifier.

because of \' ; \' after if(true);

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Question 2

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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hihello

If the condition is true, it executes the block of code above else and if false, it executes the block of code below else and it also executes the other statements below the if else statement.

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Question 3

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 4

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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Question 5

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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ooo ooo

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Question 6

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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Question 7

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 8

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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while(0) has to be false, how 2nd loop is executed? anyone explain?

Semicolon is there after while Hence another printf function is also executed

There\'s ; after while loop so obvsly it is executed over there. Then next statement is executed which is printf(\"outside loop\");

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Question 9

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

Inside while loop

Outside while loop

Outside while loop

Depends on the compiler

Depends on the compiler

Compile time error

Compile time error

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just run this on your compiler by changing (“Inside while loop\\n”) to (\" inside while loop\") . note: inverted commas are different in both. d) is correct main.c: In function ‘main’: main.c:21:8: warning: missing terminating \" character printf(\"Inside while loop\\n”); ^ main.c:21:8: error: missing terminating \" character printf(\"Inside while loop\\n”); ^~~~~~~~~~~~~~~~~~~~~~~~~ main.c:23:1: error: expected expression before ‘}’ token } while (i < 3); ^ main.c:23:1: error: expected ‘;’ before ‘}’ token

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Question 10

Time: 00:00:00
Which of the following can not be used as LHS of the expression for (exp1 ;exp2 ; exp3)?

Variable

Variable

Function

Function

typedef

typedef

macros

macros

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

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