Pre-incrementoperators and post-increment operators

This is a discussion on Pre-incrementoperators and post-increment operators within the C Programming forums, part of the General Programming Boards category; Hi, i bought a book about C and now im in chapter 6, theyre explaing stuff about Pre-incrementoperators and post-increment ...

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    Pre-incrementoperators and post-increment operators

    Hi, i bought a book about C and now im in chapter 6, theyre explaing stuff about Pre-incrementoperators and post-increment operators, but i dont really understand what they do. Please help me!

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    It just changes when the increment occours...
    Code:
    #include <stdio.h>
    int main ()
    {
     int x = 3;
     printf ("%d x\n", x); // Prints 3
     printf ("%d x++\n", x++); // Prints 3 again, then increments x to 4...
     printf ("%d x\n", x); // x is now 4, so prints 4.
     printf ("%d ++x\n", ++x); // Increments x to 5, then prints x (5)
     printf ("%d x\n", x); // x is now 5, so prints 5
     return 0;
    }
    If the line has ++x, then x is incremented before the line is evaluated. If the line has x++, then the line is evaluated before x is evaluated.
    Callou collei we'll code the way
    Of prime numbers and pings!

  3. #3
    Guest Sebastiani's Avatar
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    Waterloo, Texas
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    Very elegant explanation there, QC! Kudos!
    Code:
    if( numeric_limits< byte >::digits != bits_per_byte )
        error( "program requires bits_per_byte-bit bytes" );
    24bbs.cpp

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    Exclamation

    What???

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