Question

help

Answer 1

can u identify error in my program below its not working either

#include<iostream.h>
#include<conio.h>
class distance
{
int m,cm;
public:
void read();
void operator +(distance);
void display();
};
void distance::read()
{
cout<<"\n\nEnter distances:";
cin>>m>>cm;
}
void distance::display()
{
cout<<"\n distances:";
cout<<m<<cm;
}
void distance::operator +(distance d1)
{
distance temp;
temp.cm=cm+d1.cm;
temp.m=m+d1.m;
if(temp.cm>=100)
{
temp.m+=1;
temp.cm=(temp.cm%100);
}
}
void main()
{
distance d3,d4,d5;
d3.read();
d4.read();
d5=d3+d4;
d5.display();
getch();
}

Answer 2

@slotema

Answer 3

There's problem with the operator+ method. When you do the assignment `d5 = d3 + d4;`, it'll be translated into something like `d5 = d3.operator+(d4);`. But operator+ returns a void! So you're trying to assign a void to a distance, which won't work unless you overload operator= to work on voids.

The best way to fix this problem is to have operator+ return a new distance with the new m and cm values.

Answer 4

oh thanks a lot for the spot....that was a silly but serious mistake

@Opcode u must see this

Answer 5

No problem. And most serious mistakes are caused by some small, seemingly unimportant detail.

Answer 6

:)