Where is wrong?

Question

#include <iostream>
using namespace std;
int sum( int [ ],int );
void read( int [ ], int );
int main()
{
const int size=c;
int a[size];
read( a , size);
cout<<"SUM:"<<sum;
}
void read( int a[ ], size )
{
int c,i;
cout<<"how many number dou you want to enter? enter:";
cin>>size;
do
{
cout<<"enter a["<<i<<"]:";
cin>>a[size];
}while(i<=size);
}
int sum( int a[ ] , int )
{
int sum=0;
for( i=0 ; i<c ; i++ )
{
sum=sum+a[ size ];
}
return sum;
}

Answer 1

And also
Every time when you use a variable like
size=c;
Or
cout<<sum; => you need provide the values (for c & sum) before using otherwise it give error or garbage values...
Here 'sum' is a function so you need to call like
sum(a,5);//5 is size ex.
Run it playground and paste the link here....
If you don't get correct...