14ITERATIVE CONTROL STRUCTURES
Most programs spend the majority of their time executing machine instructions within a loop. Therefore, if you want to improve your applications’ execution speed, first you should see if you can improve the performance of the loops in your code. This chapter will describe the following varieties of loops:
while loops
repeat..until/do..while loops
forever (infinite) loops
for (definite) loops
14.1 The while Loop
The while loop is perhaps the most general-purpose iterative statement that HLLs provide, so compilers generally work hard at emitting optimal code for it. The while loop tests a Boolean expression at the ...
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