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#include <stdio.h>
#include <math.h>
#include <conio.h>

int array [2000000];

void merge(int* input, int p, int r)
{
int mid = (int)floor((p + r) / 2);
int i1 = 0;
int i2 = p;
int i3 = mid + 1;

int temp[r-p+1];

while ( i2 <= mid && i3 <= r )
if ( input[i2] < input[i3] )
temp[i1++] = input ...

thank you

can any one help me ?
why the following compilation error is shown ?

Main.java:5: class MAINN is public, should be declared in a file named MAINN.java
public class MAINN {
^
1 error