Section 6: Branching and Looping 75
The program line immediately following that containing the conditional test
instruction can contain any instruction; however, the most commonly used
instruction there is t. If a t instruction follows a conditional test
instruction, program execution branches elsewhere in program memory if the
condition is true and continues with the next line in program memory if the
condition is false.
Example: The radioisotope decay program (page 72) can be made to stop
automatically after a specified number of loops by using the ~ condition.
Suppose N at t = 12 days is the last value you need. You can stop execution
automatically at this point by storing the number of loops to be run (3),
subtracting 1 from this number each time the loop is run, and instructing the
program to stop (with a t 00 instruction) when this number equals zero.
The revised program would then look like this
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