CareerCup

#include<stdio.h>
#include<stdlib.h>

typedef struct node
{
int x;
int y;
}node;

int fun(node* arr[])
{
int i;
int col=1;
int row = 1;

for(i=1;i<3;i++)
{
if(arr[0]->x!=arr[i]->x)
{
row= 0;
break;
}
}

for(i=1;i<3;i++)
{
if(arr[0]->y!=arr[i]->y)
{
col= 0;
break;
}
}

if(col==1&&row==1)
return 3;
else if(col==1)
return 2;
else if(row==1)
return 1;
else
return 0;
}
int main (void)
{
int i,x,y;
node* arr[4];
for(i=0;i<4;i++)
{
scanf("%d%d",&x,&y);

node* temp=(node*)malloc(sizeof(node));
temp->x= x;
temp->y=y;
arr[i]=temp;
}
fun(arr);
return 0;
}

#include<stdio.h>
#include<stdlib.h>

typedef struct node
{
int x;
int y;
}node;

int fun(node* arr[])
{
int i;
int col=1;
int row = 1;

for(i=1;i<3;i++)
{
if(arr[0]->x!=arr[i]->x)
{
row= 0;
break;
}
}

for(i=1;i<3;i++)
{
if(arr[0]->y!=arr[i]->y)
{
col= 0;
break;
}
}

if(col==1&&row==1)
return 3;
else if(col==1)
return 2;
else if(row==1)
return 1;
else
return 0;
}
int main (void)
{
int i,x,y;
node* arr[4];
for(i=0;i<4;i++)
{
scanf("%d%d",&x,&y);

node* temp=(node*)malloc(sizeof(node));
temp->x= x;
temp->y=y;
arr[i]=temp;
}
fun(arr);
return 0;
}

public enum PointsState
    {
        None,
        Row,
        Column,
        Diagonal
    }
    public class Point
    {
        public int X { get; set; }
        public int Y { get; set; }
    }

    public class PointChecker
    {
        public static PointsState GetPointsState (IList <Point> points)
        {
            if (points.Count < 2)
                return PointsState.None;

            var firstPoint = points[0];

            bool sameX = true;
            bool sameY = true;
            bool sameDiagonal = true;

            for (var i = 1; i < points.Count; i++)
            {
                if (points [i].X != firstPoint.X)
                    sameX = false;

                if (points [i].Y != firstPoint.Y)
                    sameY = false;

                // check if diagonal!

                if (firstPoint.X * points [i].Y != firstPoint.Y * points [i].X)
                    sameDiagonal = false;
            }

            if (sameX)
                return PointsState.Row;
            if (sameY)
                return PointsState.Column;
            if (sameDiagonal)
                return PointsState.Diagonal;
            return PointsState.None;
        }
    }

You missed the 'consecutive' part i guess.