#include <stdio.h>
void swap(int a, int b);
int main(){
int a = 5;
int b = 6;
// printf("a=%d,b=%d\n",a,b);
printf("a=%d,b=%d\n",a,b);
swap(a,b);
return 0;
}
void swap(int a,int b){
a = a ^ b;
b = a ^ b;
a = a ^ b;
printf("a=%d,b=%d\n",a,b);
}