//p28.c -- @CopyLeft by tsaiwn@csie.nctu.edu.tw
// demo the strange of Integer because of 2's complement
// Most computers use 2's complement to represent negative numbers
#include<stdio.h>
int main( ) {
    short gg, ans = 32765;
    int k;
    for(k=1; k<= 6; ++k) {
        printf ("= %hd ", ans );
        gg = -ans;
        if(gg == ans) printf("=YES\n");
        else printf("=NO\n");
        ans++;
    } // for k
    printf("Hit RETURN key..."); 
    getchar( ); return 0;
}
/******
C:\test2> gcc p28.c
C:\test2> a.exe
= 32765 =NO
= 32766 =NO
= 32767 =NO
= -32768 =YES
= -32767 =NO
= -32766 =NO
C:\test2>
********************/