C programming basics: variables, functions, loops

1. 1Declaring variables
   
   Which of the following statements correctly declare variables?

   1. Aint sum = 5;
   2. Bsum = 7;
   3. Cvoid x = 31;
   4. Ddouble d = 2.5;
2. 2What is the result of 45 / 4?

   1. A11.25
   2. B12
   3. C10
   4. D11
3. 3Declaring functions
   Which of the following declare a function that sums two numbers and gives the result to the caller?

   1. Adouble sum(double d1, double d2) { return d1 + d2; }
   2. Bvoid sum(double d1, double d2) { return d1 + d2; }
   3. Cdouble sum(double d1, double d2) { d1 + d2; }
   4. Dvoid sum(double d1, double d2) { sum = d1 + d2; }
4. 4Character values
   Which of the following is the correct expression of the character 7?

   1. A7
   2. B'7'
   3. C"7"
   4. D<7>
5. 5Assignment operator
   ________ is the assignment operator.

   1. A=
   2. B:=
   3. C=:
   4. D==
6. 6Printing characters
   Suppose c is a char variable with the value 'e'. What is the printout of the statement printf("%c", +
   +c)?

   1. Ac
   2. Bd
   3. Ce
   4. Df
7. 7Compiler checks
   The compiler checks ________.

   1. ASyntax errors
   2. BRunetime errors
   3. CLogical errors
8. 8Declaring strings
   Which of the following statements correctly declare a C string?

   1. Astring s = "Hello, World!";
   2. Bchar s = "Hello, World";
   3. Cchar s[] = "Hello, World!";
   4. Dstring s = 'Hello, World!';
9. 9Bits and bytes
   One byte usually has ________ bits.

   1. A4
   2. B8
   3. C12
   4. D16
10. 10Main function
    Which of the following are valid main functions?

    1. Aint main() { return 0; }
    2. Bvoid main() { }
    3. Cint main() { }
    4. Dvoid main() { return 0; }

11. 11Comments
    Which of the following are valid C99 comments?

    1. A// Comment here
    2. B/* Comment here */
    3. C/* Comment here
    4. D// Comment here */
12. 12Local variables
    Local variables exist:

    1. AFrom the beginning of the scope to the end of the scope
    2. BFrom where they are declared to the end of the scope
    3. CFrom the beginning of the function to the end of the function
    4. DFrom where they are declared to the end of the function
13. 13For loop
    What is the output of the following code:
    int i = 0;
    for (i = 0; i < 10; i++) { }
    printf("%i", i);

    1. A9
    2. B10
    3. C11
14. 14Reading values
    Which of the following statements correctly use scanf()?

    1. Aint i; scanf("%i", &i);
    2. Bint i; scanf("%i", i);
    3. Cdouble d; scanf("%d", &d);
    4. Ddouble d; scanf("&d", &d);

Description

Quiz on Untitled, created by Morten J. on 07/12/2018.

Author

Morten J.

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Created on 7 Dec 2018 · updated on 7 Dec 2018

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