//self studying exercises, no need to submit to the teacher.
//  Appendix: testing C and assembly conversion
// run this program and read contents in the disassembly window in uvision
//Exercises: Use single step to run it, and answer the questions below.
#include <lpc21xx.h>
int a[4],b[4],c,i;
main()
{
 for(;;) //testing forever
 {
  //test 1, looping
  for (i=1;i<10;i++)
  {
    if (i <= 5) 
       c = 0; 
    else 
       c = 1;
  }
//Question1a: Where does the program store i and c?
//Question1b: Draw the flow diagram of the program.
  //test 2, looping and array
  for (i = 0; i < 4; i++)
  {a[i]=0; b[i]=0;//clear the arrays
  }
  for (i = 0; i < 10; i++)
  {a[i]=3+i; //set values into the array 
  }//question2a: Find a bug in the above program. 
  //question2b: What is the actual result of running the code?
  //test 3, looping
 i=0,c=0; //clear i,c
 while (i<5)
 {c++;
 i++;
 }
//Question3a: Where does the program store i and c?
//Question3b: Draw the flow diagram of the program.
 //test 4, test switching
 i=0,c=1; //clear variables
    for(i=0;i<5;i++)
    {
     switch (i) {
         case 0: c=0;
         case 1: c=1;
         case 2: c=2;
         case 3: c=3;
         case 4: c=4;
     default:   c=0;
      }     }  }			 
//question4a: Explain how switch-case is implemented here.
//question4b: Suggest an alternative method for the implementation.

	}