structured programming - Are there any good published algorithms for restructuring procedural code? -

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i've got ugly old program try organize/prettify. few thousand lines, few dozen labels , 100 goto's. goto's half forward , half backward. overlap every way, , there computed goto's , case statements spray goto's willy-nilly out of several of cases. bad things can program not branch thens, elses or cases. uses conditional branches backwards instead of loops, many of these within cases statements.

i recall proved maybe 40 or 50 years ago goto's not needed if 1 has loops , if-then-else (not mention cases). question is: there manageable algorithms or sets of rules follow, hand or computer, proof proved possible, i.e. translate spaghetti reasonably readable code of goto's gone?


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