Don't spend too much time on any one question.

1. Unix Basics: Suppose you are logged on to Linux/Unix and are in your home directory.
   1. Give a command to create a new directory rec2.

       

   2. Give a command to change to this new directory.

       

   3. Now assume that you have used vi to create a file which is a C program hello.c in this directory (as is partly described in the next question). Give a command to compile this C program, resulting in an executable file hello.

       

   4. Give a command to execute the filehello, and to redirect the output to a file named hello.output.

       

2. vi Editor: Suppose you are using vi to create and edit a new file named hello.c.
   1. Give command(s) so that you can create and start editing the file.

       

   2. Give command(s) to enter the following line into the file:

      
      #include <stdio.h>
          

       

   3. Give command(s) to save the file and exit vi.

       

3. lint:
   1. How will lint help us with the following segment of C code:

      
      double x = 3.1415926;
      printf("x = %10.6i\n", x);
          

       

4. dice program:
   1. How does one write the formal parameter to a function in C when it is a 1-dimensional array named a?

       

   2. What is likely to be an error in the C constant definition:

      
      #define PI 3.14159265358979;