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大小端测试程序

方法一:

#include<stdio.h>#include<stdlib.h>int main(int argc ,char *argv[]){    union name{        int i;        char a;    }c;     c.i=0x04030201;    printf("%d\n",c.a);//输出4为大端存储,输出1为小端存储    return 0;}

方法二:

#include  <stdio.h>typedef union{        unsigned int a;        unsigned char b[4];}Endian;int main(){        Endian test;        test.a=0x12345678;        printf("%s\n",(0x12 == test.b[0])?"Big Endian":"Small Endian");        return 0;}

 

方法三:

#include<stdio.h>#include<iostream.h>void main(){        union w {        int m ;        char n ;     };    w  ww ;    ww.m=1 ;    if(ww.n==1)        printf("it is little-endian ");        else        printf("it is libig-endian ");    }

 

大小端测试程序