#include <math.h>
#include <stdlib.h>
#include <stdio.h>
typedef int Number;
Number randNum()
{    return rand();}
main(int argc, char *argv[])//ОТ КЪДЕ СЕ ПОЛУЧАВАТ ТИЯ АРГУМЕНТИ?!?
{
   int i, N = atoi(argv[1]);
   float m1 = 0.0, m2 = 0.0;
   Number x;
   for( i = 0; i < N; i++)
      {
         x = randNum();
         m1 += ((float)x)/N;
         m2 += ((float)x*x)/N;
      }
   printf("\tAverage:%f\n", m1);
   printf("Std. deviation:%f\n", sqrt(m2 - m1*m1));
   system("pause");
   return 0;
}

Microsoft Windows [Version 6.0.6000]
Copyright (c) 2006 Microsoft Corporation.  All rights reserved.

C:\Users\int21h>cd\temp

C:\TEMP>type try01.cpp
#include <stdio.h>

void main( int argv, char *argc[] )
{
  printf( "Number of arguments: %d\n\n", argv );
  for( int Loop = 0; Loop < argv; Loop++ )
    printf( "ArgN: %d, Argument: %s\n", Loop, argc[ Loop ] );
}

C:\TEMP>bcc -3 -O2 -mh try01.cpp
Borland C++ 5.0 Copyright (c) 1987, 1996 Borland International
try01.cpp:
Turbo Link  Version 7.1.32.2. Copyright (c) 1987, 1996 Borland International

C:\TEMP>try01 parametyr1 parametyr2 parametyr3
Number of arguments: 4

ArgN: 0, Argument: C:\TEMP\TRY01.EXE
ArgN: 1, Argument: parametyr1
ArgN: 2, Argument: parametyr2
ArgN: 3, Argument: parametyr3

C:\TEMP>

C:\>a p1 p2 p3
Number of arguments: 4

ArgN: 0, Argument: a
ArgN: 1, Argument: p1
ArgN: 2, Argument: p2
ArgN: 3, Argument: p3

C:\>a.exe p1 p2 p3
Number of arguments: 4

ArgN: 0, Argument: a.exe
ArgN: 1, Argument: p1
ArgN: 2, Argument: p2
ArgN: 3, Argument: p3

C:\>C:\a.exe p1 p2 p3
Number of arguments: 4

ArgN: 0, Argument: C:\a.exe
ArgN: 1, Argument: p1
ArgN: 2, Argument: p2
ArgN: 3, Argument: p3