• 2022-05-28
    阅读下面程序:#include<iostream.h>void funl(char a,char b){ char c; c=a;a=b;b=C;}void fun2(char &a,char b){ char c; c=a;a=b;b=c;}void fun3(char &a,char &b){ char c; c=a;a=b;b=C;}void main(){ char a,b; a=’A’;b=’B’; funl(a,b);cout<<a<<b; a=’A’;b=’B’; fun2(a,b);cout<<a<<b; a=’A’;b=’B’; fun3(a,b);cout<<a<<b;} 则该程序的输出为 【15】 。