eQuiz - Multiple choice test on programming language C - part 1

TipsMake.com - Welcome to the quiz series of TipsMake.com with topics related to the fields of information technology. And this time we will continue with part 1 of the C programming knowledge test series, a total of 15 questions will be answered with no time to answer each sentence.

Question 1: What is the output of the following code?

  #include main () { int x = 5 ;  if ( x = 5 ) { if ( x = 5 ) break ;  printf ( "TipsMake.com hello!" );  } printf ( "TipsMake.com" );  } 

A - Compilation error.

B - TipsMake.com hello!

C - TipsMake.com

D - Compiler warning.

Question 2: What is the size of the union definition below?

  #include union abc { char a , b , c , d , e , f , g , h ;  int i ;  } abc ;  main () { printf ( "% d" , sizeof ( abc ));  } 

A - 1

B - 2

C - 4

D - 8

Question 3: Please indicate the option to attach a file to the current program is invalid below:

A - #include

B - #include 'file'

C - #include

D - All của số này không hợp lệ.

Question 4: What is the output of the following program?

A - Compilation error

B - Runtime Error

C - 5

D - 10

Question 5: Are local variables in C stored in .?

A - Code segment

B - Stack segment

C - Heap segment

D - No answer right

Question 6: Where does the C rewind () library function reposition the internal cursor of the file?

A - File head.

B - End of file.

C - Between files

D - Position specified.

Question 7: The cursor formula is equivalent to using array elements a [i] [j] [k] [2] is?

A - (((a + m) + n) + o) + p)

B - * (* (* (* (a + i) + j) + k) +2)

C - * ((((a + m) + n) + o + p)

D - * (((a + m) + n + o + p)

Question 8: In the code below, P2 is:

A - Integer

B - Integer pointer

C - Both Integer and Integer pointer

D - There is no right answer

Question 9: What does the following command define?

  int * ptr [10]; 

A - ptr is an array pointer with 10 integer pointer.

B - ptr is an array of 10 pointers to integers.

C - ptr is an array of 10 integer pointers

D - There is no right answer

Question 10: What is the output of the code below?

  #include 
  int main () 
  { 
  int a = 10; 
  if (a == a--) 
  printf ("TRUE 1 t"); 
  a = 10; 
  if (a == --a) 
  printf ("TRUE 2 t"); 
  } 

A - TRUE 1

B - TRUE 2

C - TRUE 1 TRUE 2

D - No output

Question 11: Where is a valid C expression?

A - int my_num = 100,000
B - int my_num = 100000
C - int my num = 1000
D- int $ my_num = 10000

Question 12: This is the output of the following code:

  #include 
  int main () 
  { 
  printf ("TipsMake.com!% dn", x); 
  return 0; 
  } 

A - TipsMake.com! x

B - TipsMake.com! with junk worth going after

C - Compilation error

D - TipsMake.com!

Question 13: What happens if the following code is executed?

  #include 
  int main () 
  { 
  int main = 3; 
  printf ("% d", main); 
  return 0; 
  } 

A - Create compilation error

B - Generate runtime error

C - It will run without error and print 3 to the screen

D - It will create an infinite loop

Question 14: This is the output of the following code:

  #include 
  int main () 
  { 
  char chr; 
  chr = 128; 
  printf ("% dn", chr); 
  return 0; 
  } 

A - 128

B - -128

C - Depending on the compiler

D - There is no right answer

Question 15: This is the output of the following code:

  #include 
  int main () 
  { 
  char * p [1] = {"TipsMake.com"}; 
  printf ("% s", (p) [0]); 
  return 0; 
  } 

A - Compilation error

B - Unknown error

C - TipsMake.com

D - No answer right

Question 16: This is the output of the following code C:

  #include 
  int main () 
  { 
  printf ("quantrimang.comn"); 
  return 0; 
  } 

A - quantrimang.com

B - quantrimang.

code

C - comquantrimang.

D - quantrimang.

Question 17: Which of the following is not a logical or relational operator?

A -! =

B - ==

C - ||

D - =

Question 18: The scope of an automatic variable is:

A - In the block it appears

B - In the block of the block it appears

C - Until the end of the program

D - Both A and B

Question 19: Is the default storage layer automatic if not specified for a local variable?

A - True

B - False

C - Depends on standards

D - Not mentioned

Question 20: What is the scope of an external variable?

A - The entire source file in which the variable is defined

B - From the declaration point to the end of the file in which the variable is defined

C - Any source file in the program

D - From the declaration point to the end of the file being compiled

Answer:

1. A 2. C 3. C 4. D 5. B 6. A 7. B 8. B 9. C 10. B 11. B 12. C 13. C 14. B 15. C 16. A 17. D 18. D 19. A 20. D

Good luck!