题解 | #牛牛学说话之-字符#

#include<stdio.h> int main(){ int a; int b; scanf("a=%d,b=%d",&a,&b); a=a^b;//用异或运算符

b=a^b;
a=a^b;
/*
  int a=60;         //0011 1100
 int b=13;         //0000 1101
a=a^b;                     //a=a^b=0011 0001
b=a^b;                     //b=a^b=0011 1100
a=a^b;                     //a=a^b=0000 110

*/
printf("a=%d,b=%d\n",a,b);

}