各位老大帮帮小弟!!!
#include <iostream.h>
int i(5),j(8);
int sum (int,int b=i+j,int c=i*j);
void main()
{
int x(5),y(10);
int s1=sum(x);
int s2=sum(x,y);
cout<<"s1="<<s1<<'\n'<<"s2="<<s2<<endl;
}
int sum(int a,int b,int c)
{
return a+b+c;
}
运行的结果:58
55
但是我不知道55是怎么得来的,请各位老大帮助解决一下!谢谢!·