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why this code shows diffferent results

Discussion in 'C' started by arun12138, Dec 6, 2008.

  1. arun12138

    arun12138 New Member

    main( )
    float a = 15.5 ;
    char ch = 'C' ;
    printf ( "\n%f %c", a, ch ) ;
    printit ( a, ch ) ;
    printit ( float sa, char sch )
     printf ( "\n%f %c", sa, sch ) ;
    this shows 15.5 C in main printf() and 0.00 in printit() why?
    Last edited by a moderator: Dec 6, 2008
  2. xpi0t0s

    xpi0t0s Mentor

    What compiler are you using?
    Does it work correctly if you redefine printit to void instead of default-int and place it above main (or prototype it)?

    Tried it in Visual Studio 2005 and it wouldn't compile because of the above; I set the return of printit to void and moved it above main and it worked fine.

    So I'd guess this is either a compiler bug or a consequence of some of the default behaviour you're relying on here (mainly that when the compiler finds printit in use it assumes its prototype is "int printit()" ).

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