what does possible use of 'i' before definition in C++?

[aza2106]

what does possible use of 'i' before definition in C++?

#include <iostream.h>
#include <conio.h>

int main()
{
 const int size= 10;
 double a[size],b[size],c[size],d[size];
 int i,larger;


 cout<<"Enter your number: "<<endl;
 cin>>a[i];
 cin>>b[i];

 for(int i=0; i<10; i++)
 {
  c[i]=a[i]+b[i];

  cout<<"  "<<c[i]<<endl;
 }
   if(a[i]>b[i])
      larger=a[i];
  else
      larger=b[i];



  larger=d[i];
  cout<<" "<<d[i]<<endl;

  getch();
 }

[weaknessforcats]

I'm not sure what you mean. Can you give an example from the code you posted?

[donbock]

Notice the "enter your number" block of code:

cout << "Enter your number:" << endl;
cin >> a[i];
cin >> b[i];

This block uses i as an array index before any value has been assigned to it.