#include <stdio.h>int main()
{int arr1[10]={1,2,3,4,5,11,14,16,17,12};int arr2[10]={0,6,7,8,9,15,21,18,19,13};int arr3[10];int i=0;for(i=0;i<sizeof(arr1)/sizeof(arr1[0]);i++){arr3[i]=arr1[i];arr1[i]=arr2[i];arr2[i]=arr3[i];//不定义第三个变量的两种种方法：//利用"+"运算符("-"运算符同理)//arr1[i]=arr1[i]+arr2[i];//arr2[i]=arr1[i]-arr2[i];//arr1[i]=arr1[i]-arr2[i];//利用"^"运算符//arr1[i]=arr1[i]^arr2[i];//arr2[i]=arr1[i]^arr2[i];//arr1[i]=arr1[i]^arr2[i];}for(i=0;i<sizeof(arr1)/sizeof(arr1[0]);i++){printf("%d",arr1[i]);}printf("\n");for(i=0;i<sizeof(arr2)/sizeof(arr2[0]);i++){printf("%d",arr2[i]);}printf("\n");return 0;
}