{
int a = 3,b = 4;
int tmpPuts("第壹種方法:");
tmp = a;
a = b;
b = tmp
printf("a=%d,b=%d\n ",a,b);
a = 3;b = 4;
Puts("第二種方法:");
a+= b;
b = a-b;
a-= b;
printf("a=%d,b=%d\n ",a,b);
a = 3;b = 4;
Puts("第三種方法:");
a ^= b ^= a ^= b;
printf("a=%d,b=%d\n ",a,b);
返回0;
}