| 发表于：2007-08-31 17:19:15 楼主 |
//以下是我的程序，怎样修改caculate函数，使他按地址传递？
#include <iostream>
using namespace std;
const int size=20;
struct box
{
char maker[40];
float height;
float width;
float length;
float volume;
};
void output（box x[],int m);
double caculate（box p[],int lim);
int main（)
{
int n;
cout < < "how many records do you want to enter:\n ";
cin> > n;
box market[size];
for（int i=0;i <n;i++)
{
cout < < "maker: ";
cin> > market[i].maker;
cout < < "height: ";
cin> > market[i].height;
cout < < "width: ";
cin> > market[i].width;
cout < < "length: ";
cin> > market[i].length;
cout < <endl;
}
market[i].volume=caculate（market,n);
output（market,n);
cout < < "done!\n ";
return 0;
}
void output（box x[],int m)
{
for（int i=0;i <m;i++)
{
cout < < "maker: " < <x[i].maker < <endl;
cout < < "height: " < <x[i].height < <endl;
cout < < "width: " < <x[i].width < <endl;
cout < < "length: " < <x[i].length < <endl;
cout < < "volume: " < <x[i].volume < <endl;
cout < <endl;
}
}
double caculate（box p[],int lim)
{ for（int i=0;i <lim;i++)
p[i].volume=p[i].length*p[i].width*p[i].height;
return p[i].volume;
} |
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