how can i prevent bogus values while executing a loop consist of variables?

sir, In my program there is a loop having both starting and ending values are variable which is called earlier in the program.when executing i got bogus value as result.but when i give the values of the variables directly just before the loop i got correct result.why this happens?how can i solve this? concerned loop in my program is attached here..n my problem is the result obtained as "sumB"..in that the variables "g" and "h" was obtained earlier

Answer 1

[Thorsten]

Have you checked the value of sumB before the loop? Maybe you assume sumB to be 0 but it is not from a previous run of the loop.