1)  {[4 pts.]} Give the sequence of UNIX commands which would be used
	(1) to create a source file named this.c, (2) compile that source
	file (assuming you saved it in the previous step), and (3) run
	the executable file created by that compilation.  Use the tools
	discussed in class to preform each of these tasks, and note that
	each of the commands is given at the UNIX shell prompt.

	% _ emacs  this.c
	% _ cc  this.c
	% _ a.out


2) {[3 pts.]} Briefly describe the purpose of each of the UNIX
	commands given here

        ls  - lists the contents of a directory (list)

        cd - moves you to another directory (change directory)

        more - displays the contents of a file one screenful at a time



3) {[3 pts.]} Give an example of one escape sequence that can
	be used within the string passed to the printf function 
	and tell what it means to the format of the output.

	\n  = newline
	\t  = tab
	\r  = carriage return
	\a  = beep
	\b  = backspace
	\\  = \
	\"  = "
	%%  = %   



4) {[12 pts.]} What is the output generated for each of the following
        statements, given the declarations shown?  Each subpart is
        independent and does not rely on the results of those above it.
	Be sure to leave the correct whitespace (blank lines if appropriate
	and use ^ to indicate each blank space).

int x= 2, y= 5;
float z= 2.879;

          a. printf("%d-%d", x * x, y - x);

	  4-3
   


          b. printf("\nx\\y\n");

	  _____
	  x\y



          c. printf("%d(%5.1f)\n",x,z);

	  2(^^2.9)



          d. printf("%.2f", z - x);

   	  0.88



5) {[18 pts.]} Write a complete C program which will prompt its user to
        enter the amount of change they have in thier pocket. It will be a
	series of 4 integers telling the number of quarters (25 cents), dimes
	(10 cents), nickles (5 cents) and pennies (1 cent).  Your program
	must then tell them the amount of money they have written as 
	$xx.xx (dollar sign, whole dollars, decimal point and fraction
	of a dollar).

        Your program must be neatly written, using good style as explained
        in class and in your text, and contain at least one comment and one
        symbolic constant definition.

        For example, here is one sample execution of such a program (input
        values are underlined).


Enter your coins: _5_2_1_3_
You have $1.53.

--------------------------------
#include <stdio.h>		
#define qval 25			
#define dval 10	  		
#define nval 5 			

/* answer key to last question on quiz1 */  
						
						
						

main()				 
					

{					
	int qt, nk, dm, pn;
        float amt;		

	printf("Enter your coins: ");		
	scanf("%d %d %d %d",&qt, &dm, &nk, &pn);
							

        amt = (qt*qval+dm*dval+nk*nval+pn)/100.0;  
   							
        printf("You have $%.2f.\n",amt);	   
							

	return 0;					
}