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Subject: | Re: calling unzip32 from C program |
Date: | Fri, 17 Sep 2004 19:06:34 +0200 |
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Hans-Bernhard Broeker escribió: >>ret=system("unzip prueba.zip"); >>then I write an "unzip.bat" with: >>unzip32 %1 %2 %3 %4 %5 %6 >>At execution, unzip32 works OK but return value from system is 1. When I >>execute unzip.bat from the console, errorlevel from unzip32 is 0 but >>when called from system in the C program, it returns 1. > > > If you ever want to look at return codes don't go through a .bat file. > Command.com has an unbelievably stupid feature: it won't tell you > anything about return levels of batch files, or of the programs they > executed. > > For the case at hand, there's really nothing to be gained by having > that .bat file --- you could, and should, run unzip32.exe itself, > directly from your C program, or rename/copy unzip32.exe to unzip.exe, > if it's just the name "unzip" you're after. > It's the same using or not a BAT file. I tried checking return code from unzip32 in the BAT (after calling it) and it was '1', and if I call system("unzip32 prueba.zip") I get '1' too. See: if I call unzip32 from console or from a BAT executed from console, it returns 0; if I call unzip32 from a C program, via system(), or from a BAT file launched from a C program, it returns 1
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