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I got a WA!

#include <cstdlib>
#include <iostream>
#include <math.h>
#include <cstring>

using namespace std;

int main(int argc, char *argv[])
{
int check=0,x=0;
char n[12],nn[999];
while(cin.getline(n,12)) //n[6]='.',n[0],n[10]='|'
{
int sum=0;
if (n[0]=='_' && check==1) break;
if (n[0 ...

I compile my code with Microsoft C++ and Dev C++, there is no error,
but I got a CE. PLease help me, thanks.

#include <cstdlib>
#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main(int argc, char *argv[])
{
double x1,y1,x2,y2,x3,y3,ox,oy,r,k1,k2,sum;
while(cin ...

My code(C++):
#include <iostream.h>
int dd(int,int,int,int,int,int,int,int);
void main()
{
int n,i,x1,y1,x2,y2,sx1,sy1,sx2,sy2,lx,ly,rx,ry;
cin>>n;
for (i=0;i<n;i++)
{
cin>>x1>>y1>>x2>>y2>>sx1>>sy1>>sx2>>sy2;
lx=sx1;ly=sy1;rx=sx2;ry=sy2;
if (lx>rx) {lx=sx2;rx=sx1;}
if (ly<ry) {ly=sy2;ry=sy1;}
int ...