C loop

Choose a right C Statement.

• A) Loops or Repetition block executes a group of statements repeatedly.

• B) Loop is usually executed as long as a condition is met.

  .

• C) Loops usually take advantage of Loop Counter

• D) All the above

Loops in C Language are implemented using.?

• A) While Block

• B) For Block

• C) Do While Block

• D) All the above

Which loop is faster in C Language, for, while or Do While.?

• A) for

• B) while

• C) do while

• D) All work at same speed

Choose correct C while loop syntax.

• while(condition)

  { //statements }

• { //statements }while(condition)

• while(condition);

  { //statements }

• while()

  { if(condition) { //statements } }

Choose a correct C for loop syntax.

• for(initalization; condition; incrementoperation)

  { //statements }

• for(declaration; condition; incrementoperation)

  { //statements }

• for(declaration; incrementoperation; condition)

  { //statements }

• for(initalization; condition; incrementoperation;)

  { //statements }

Choose a correct C do while syntax.

• dowhile(condition) { //statements }

• do while(condition) { //statements }

• do { //statements }while(condition)

• do { //statements }while(condition);

What is the output of C Program.?

int main()

{

while(true)

{

printf("RABBIT");

break;

}

return 0;

}

• A) RABBIT

• B) RABBIT is printed unlimited number of times.

• C) No output

• D) Compiler error.

Answer explanation

while(TRUE) or while(true) does not work. true is not a keyword.

What is the output of C Program.?

int main()

{ int a=5;

while(a==5)

{ printf("RABBIT");

break;

}

return 0;

}

• A) RABBIT is printed unlimited number of times

• B) RABBIT

• C) Compiler error

• D) None of the above.

What is the output of C Program.?

int main()

{

int a=5;

while(a=123)

{

printf("RABBIT\n");

break;

}

printf("GREEN");

return 0;

}

• A) GREEN

• B) RABBIT GREEN

• C) RABBIT is printed unlimited number of times.

• D) Compiler error.

Answer explanation

while(a=123)  = while(123) = while(Non Zero Number). So while is executed. BREAK breaks the loop immediately. Without break statement, while loop runs infinite number of times.

What is the output of C Program.?

int main()

{

int a=32;

do

{

printf("%d ", a);

a++;

}

while(a <= 30);

return 0;

}

• 32

• 33

• 30

• No output