赋值运算

 int a, b, temp;a = 10;b = 5;temp = a;a = b;b = temp;

算数运算

思路一

 int a, b;a = 10;b = 2;a = b - a;//a=-8,b=10b = b - a;//a=-8,b=10a = b + a;//a=2,b=10 交换成功

思路二

int a = 3, b = 5;a = a + b;					//a = 3 + 5b = a - b;					//b = 8 - 5a = a - b;					//a = 8 - 3

思路三

int a = 3, b = 5;a = a * b;						//a = 3 * 5;b = a / b;						//b = 15 / 3;a = a / b;						//a = 15 / 5;

位运算

 int a, b;a = 20; b = 2;a = a ^ b;//a=10100,b=0010,两者相异或的结果是10110,并保存在a中。b = a ^ b;//a=10110,b=0010,两者相异或的结果是10100，并保存在b中，换成二进制是20a = a ^ b;//a=10110,b=10100,两者相异或的结果是00010，保存在a中，换成十进制是2