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