摘要：异或实现：void foo(int *a,int *b){ *a=*a^*b; *b=*a^*b; *a=*a^*b;}void main(){int a=1,b=2; foo(&a,&b); printf("%d.%d.%d",a,b);}或者下例：void foo(int *a,int *b){ *a=*a+*b; *b=*a-*b; *a=*a-*b;}void main(){int a=1,b=2,c=3; foo(&a,&b); foo(&b,&c); foo(&c,&a); printf(" 阅读全文