Conrad C-Control Pro Mega Series, Manual

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98 Compiler
© 2008 Conrad Electronic
break Instruction
A break instruction will leave the loop and the program execution will start with the next instruction
after the do .. while loop.
continue Instruction
When executing continue within a loop there will immediately be a new calculation of the
Expression. Depending on the result the loop will be repeated at unequal
0 . At a result of 0 the loop
will be terminated.
Example:
do
{
a++;
if(a> 10 ) break; // will terminate loop
} while( 1 ); // endless loop
5.2.6.3 for
A for loop is normally used to program a definite number of loop runs.
for(Instruction1; Expression; Instruction2) Instruction3;
At first Instruction1 will be executed which normally contains an initialization. Following the
evaluation of the Expression takes place. If the Expression is unequal
0 Instruction2 and Instruction3
will be executed and the loop will repeat itself. When Expression reaches the value 0 the loop will be
terminated. As with other loop types at Instruction3 an Instruction Block can be used instead of a
single instruction.
for(i= 0 ;i< 10 ;i++)
{
if(i>a) a=i;
a--;
}
It must be observed that variable i will within the loop run through values 0 through 9 rather than 1
through 10!
If a loop needs to be programmed with a different step width Instruction2 needs to be modified
accordingly:
for(i= 0 ;i< 100 ;i=i+ 3 ) // variable i does now increment in steps to 3
{
a= 5 *i;
}