Distance Formula in C++

#include <iostream>
#include <string>
#include <fstream>
#include <cmath>

using namespace std;


int main()
{
                  /// generating 100 point, find x,y for each point///
	int  Radio_Range=80 ,No_Max=100 ;
	int  x, y ;
	int  Total_Degree=0;
	int GridF[100][2];
	ofstream  myfile;  
	myfile.open ("example.txt");  
	int row=0;
	int miny=0,max_y=99;
	for(int i=0;i<5;i++)
	{
		int minx=0,max_x=99;
		for(int j=0;j<5;j++)
		{
			for(int k=0;k<4;k++)
			{
				x= minx+rand()%(max_x - minx+1);
				y= miny+rand()%(max_y - miny+1);

				GridF[row][0]= x;
				GridF[row][1]= y;

				

				cout<<GridF[row][0]<<"  "<<GridF[row][1]<<endl;
				
				myfile<<GridF[row][0]<<"  "<<GridF[row][1]<<endl;
				
			
			}
			minx=max_x+1;
			max_x=max_x+100;
		}
		miny=max_y+1;
		max_y=max_y+100; 
	} 
		



/////////////////// Find the distance btw 2 points///////////

	double result ,xGrid,yGrid;
	int DistanceCounter=0;	
	cout<<"Distance : "<<endl;
	cout<<endl;
	
	for(int i=0;i<50;i++)
	{
	for(int j=0;j<2;j++)
	{
 
	
//xresult
		xGrid=(GridF[j+1][0] - GridF[j][j]);?????????????
		xGrid=abs(xGrid); xGrid=xGrid*xGrid;
		cout<<"xGrid="<<xGrid<<endl;
//yresult
		
		yGrid=(GridF[j+1][j+1] - GridF[j][j+1]);?????????
		yGrid=abs(yGrid); yGrid=yGrid*yGrid;
		cout<<"yGrid="<<yGrid<<endl;
////result
		result = xGrid + yGrid;
		result = sqrt (result);
		cout<<"Equation : "<<result<<endl;
	
		
	}
	
	}

	}