Difference between revisions of "CSC231 Mystery C Program with signed numbers"

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(Mystery Program)
(Mystery Program)
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You may use this [http://www.mathsisfun.com/binary-decimal-hexadecimal-converter.html converter] to help you out...
 
You may use this [http://www.mathsisfun.com/binary-decimal-hexadecimal-converter.html converter] to help you out...
 
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<br />
<code><pre>
+
<source lang="cpp">
 
/* mystery.cpp
 
/* mystery.cpp
 
// D. T.
 
// D. T.
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}
 
}
  
</pre></code>
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</source>
  
 
<br />
 
<br />

Revision as of 07:59, 13 November 2014


Mystery Program

Figure out what the two variables x and y are initialized with when the program starts.

You may use this converter to help you out...

/* mystery.cpp
// D. T.
// mystery program
// To compile and run this program:
//
//     g++ mystery.cpp
//     a.out
//
// The output of the program is the following
//
// 32740
// -32756
//
// With what positive values were x and y initialized
// at the beginning of the program.  Explain why.
// (a short int contains 16 bits)
*/

#include <stdio.h>

main() {

    short int x = ???? ;
    short int y = ???? ;

    x = x+y;
    printf( "%d\n", x );

    x = x+y;
    printf( "%d\n", x );
}


For reference, 215 = 32768.




















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