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

From dftwiki3
Jump to: navigation, search
Line 5: Line 5:
 
Figure out what the two variables x and y are initialized with when the program starts.
 
Figure out what the two variables x and y are initialized with when the program starts.
 
   
 
   
 +
You may use this [http://www.mathsisfun.com/binary-decimal-hexadecimal-converter.html converter] to help you out...
 +
 
<code><pre>
 
<code><pre>
 
/* mystery.cpp
 
/* mystery.cpp

Revision as of 11:26, 24 September 2008

Back to weekly schedule


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 );
}































Solution!