Recap: repetition and loop statements (Chapter 5)

Counting for loop  
==================

   Example: 

   for (num = 0; num < 26; ++num){
       square = num * num; 
       printf("%5d%5d\n",num,square); 
   } 

   complete program: forloop.c
 
Counting for loop with a negative step: 
=======================================

   Example: 

   for (num = 20; num >= -20; num -= 10){
       sn = num / scaling_factor; 
       printf("%5d%8.3f\n",num,sn); 
   } 

   complete program: fornegloop.c  

Sentinel-controlled while loop
==============================

   Example: 

   product = 1; 
   printf("Enter %d to quit\n",SENVAL);  
   printf("Enter first number > "); 
   scanf("%d",&dat); 
   while (dat != SENVAL) {
       product *= dat; 
       printf("Next number number > "); 
       scanf("%d",&dat); 
   } 

   complete program: senvalloop.c  


Endfile-controlled while loop 
=============================

   Example: 

   sum = 0; 
   status = fscanf(infil, "%d", &n); 
   while (status == 1){
       sum += n; 
       status = fscanf(infil, "%d", &n); 
   } 

   complete program: eofloop.c 

do-while loop
=============

   do {
      printf("Enter positive number < 10 "); 
      scanf("%d",&num); 
   } while (num < 1 || num >= 10); 

   complete program:see dowhileloop.c