keep printing lst char

[john tindell]

#include <iostream>
#include <fstream>
using namespace std;

int main(int argc, char * argv[])
{
	if(argc<2)
	{
	cout<<"The correct format is file <string>"<<endl;
	return 0;
	}
	cout<<"correct number of parimeters."<<endl;
	cout<<"You have "<<argc<<" parimeter"<<endl;
	for(int x=0;x<argc;x++)
	{
		cout<<argv[x]<<endl;
	}
	if(argc>2)
	{
	if(argv[1]="open")
	{
		ifstream a_file;
			a_file.open(argv[2]);
			char x;
		a_file.get(x);
			while(x!=EOF)
			{
				cout<<x;
				a_file.get(x);
			}
		a_file.close();
	}
	}
	return 0;
}

all of the code works, apart from the fact that it keeps printing out the last character in the text file.