?? p13.1.c
字號(hào):
#include <stdio.h>int is_little_endian(void){ unsigned short flag=0x4321; if(*(unsigned char*)&flag==0x21) return 1; else return 0;}int main(void){ union endian_un{ short var; char bits[sizeof(short)]; }; union endian_un flag; flag.var=0x0102; if(sizeof(short)==2){ if(flag.bits[0]==1 && flag.bits[1]==2) printf("judged by first method, big-endian\n"); else if(flag.bits[0]==2 && flag.bits[1]==1) printf("judged by first method, little-endian\n"); else printf("cannot determine the type\n"); } if(is_little_endian()) printf("judged by second method, little-endian\n"); else printf("judged by second method, big-endian\n"); return 0;}
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