Introduction to computer programming, variables, and comments M1 Test

Last Updated on April 23, 2022 by Admin 3

Introduction to computer programming, variables, and comments M1 Test

1. The feature of a high-level language which makes it possible to use that language on many different computers is called:

   • portability
   • availability
   • compatibility

2. A file which contains a computer program translated into machine language is called:

   • an executable file 
   • a source file
   • an interchange file

3. Select all the true statements:

   • The “C” language compiler is case-sensitive
   • The reserved keywords cannot be used as variable as variable names
   • You can write multiline comments in the “C” language
   • The decimal value of 012 (octal) is 10
   • Nesting comments is a recommended pratice
   • The decimal value of 0x11 (hexadecimal) is 16

4. The sets of rule that determine the appropriate ways of combining symbols which from correct fragments of code in a programming language are called:

   • syntax
   • semantics
   • lexis

5. Which line of code must you insert in order for the program to produce the expected output?
   Expected output:

   1

   Code:

   #include <stdio.h>
   int main()
   
   {
          int var = 1;
          print("%d \n", var);

   • }
placed at the end of the code block
   • return 0;
placed at the end of the code block
   • int var;
placed above int var = 1;
   • No change are required – the program will compile and produce the expected output

6. What is the value of the var variable after the extension of the following snippet of code:

   int var = 2;
   var = 4
   var = var + 6;
   var = var + var;

   • 20
   • 24
   • 22
   • 10

7. Which of the following identifiers are legal variable names in the C language?

   Select three answers.

   • _3monthsOld
   • three_months_old
   • month3
   • 3monthsOld
   • int
   • three months

8. The return statement used in a function:

   • ends the function execution
   • continuously repeats the function execution 
   • repeats the function execution once, and then ends the function execution

9. Data of type float is:

   • a fractional number
   • an integral number
   • an internal number
   • an integer number

10. What is the output of  the  following  program?

    #include <stdio.h>
    int main()
    {
        int var;
        var = 1; 
        var = 2;
    /*  var = 3; */
        print("%d", var);
        return 0;
    }

    • 2
    • 3
    • 6
    • 1