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#include <conio.h>
#include <stdio.h>
main ()
{
	int a[9];
	int x, i, dem1=0, dem2=0, tong2=0, tong1=0;
	float trungbinhcong ;
 
	for (i=0;i<9;i++)
	{
		printf ("\n Nhap a[%d]:",i);
		scanf ("%d",&a[i]);
	}
	for (i=0;i<9;i++)
	printf ("  %d  ",a[i]);
	for (i=0;i<9;i++)
	{
		if (a[i]<0)
	    {
		tong1=tong1+a[i];
		dem1=dem1+1;
		trungbinhcong=tong1/dem1;
		}
		else 
		tong2=tong2+a[i];	
		if (a[i]==0)   //dem cac phan tu 0 trong day
		{
		dem2=dem2+1;
		}    	
	}
	printf ("\ntrung_binh_cong= %f", trungbinhcong);
	printf ("\n tong= %d", tong2);
	printf ("\n so phan tu 0 trong day:%d",dem2);
	printf ("\n nhap gia tri x:"); //nhap gia tri x
	scanf ("%d",&x);
	printf (" vi tri co gia tri bang x:");
	for (i=0;i<9;i++)
	if (a[i]==x)
	{ printf ("%d",i);} // in ra man vi tri giong x
	getch();
}

Main.java:1: error: illegal character: '#'
#include <conio.h>
^
Main.java:1: error: class, interface, or enum expected
#include <conio.h>
         ^
Main.java:2: error: illegal character: '#'
#include <stdio.h>
^
Main.java:6: error: class, interface, or enum expected
	int x, i, dem1=0, dem2=0, tong2=0, tong1=0;
	^
Main.java:7: error: class, interface, or enum expected
	float trungbinhcong ;
	^
Main.java:9: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	^
Main.java:9: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	         ^
Main.java:9: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	             ^
Main.java:12: error: class, interface, or enum expected
		scanf ("%d",&a[i]);
		^
Main.java:13: error: class, interface, or enum expected
	}
	^
Main.java:14: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	         ^
Main.java:14: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	             ^
Main.java:16: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	^
Main.java:16: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	         ^
Main.java:16: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	             ^
Main.java:21: error: class, interface, or enum expected
		dem1=dem1+1;
		^
Main.java:22: error: class, interface, or enum expected
		trungbinhcong=tong1/dem1;
		^
Main.java:23: error: class, interface, or enum expected
		}
		^
Main.java:26: error: class, interface, or enum expected
		if (a[i]==0)   //dem cac phan tu 0 trong day
		^
Main.java:29: error: class, interface, or enum expected
		}    	
		^
Main.java:32: error: class, interface, or enum expected
	printf ("\n tong= %d", tong2);
	^
Main.java:33: error: class, interface, or enum expected
	printf ("\n so phan tu 0 trong day:%d",dem2);
	^
Main.java:34: error: class, interface, or enum expected
	printf ("\n nhap gia tri x:"); //nhap gia tri x
	^
Main.java:35: error: class, interface, or enum expected
	scanf ("%d",&x);
	^
Main.java:36: error: class, interface, or enum expected
	printf (" vi tri co gia tri bang x:");
	^
Main.java:37: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	^
Main.java:37: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	         ^
Main.java:37: error: class, interface, or enum expected
	for (i=0;i<9;i++)
	             ^
Main.java:39: error: class, interface, or enum expected
	{ printf ("%d",i);} // in ra man vi tri giong x
	                  ^
Main.java:41: error: class, interface, or enum expected
}
^
30 errors

Standard output is empty