Задачка на С++, вот код с оплошностями([C++ Error] Unit1.cpp(25): E2141 Declaration

Задача на С++, вот код с ошибками
([C++ Error] Unit1.cpp(25): E2141 Declaration syntax error
[C++ Error] Unit1.cpp(44): E2139 Declaration missing ;
[C++ Error] Unit1.cpp(44): E2134 Compound statement missing )

//---------------------------------------------------------------------------
pragma hdrstop
include
include
include
include
//---------------------------------------------------------------------------

void vvod(float z[10], int n);
float Sa (float z[10], int n, float x) ;

//---------------------------------------------------------------------------

void main()
float a[10], b[10], c[10], h, t, sa, sb,sc;
int i, na, nb, nc;
vvod(a,na);vvod(b,nb);vvod(c,nc);
sa=Sa(a,na,h);
sb=Sa(b,nb,h);
if (sagt;sb) coutlt;lt;"A i B ikvivalentny" ;
else sc=Sa(c,nc,t);coutlt;lt;"srednee arifmet massiva C ="lt;lt; sc;

//---------------------------------------------------------------------------
void vvod ( float z[10], int amp; n)
int i; cingt;gt;n;
for (i=0, ilt;=n-1,i++)
cingt;gt; z[i];


//---------------------------------------------------------------------------

float Sa (float z[10], int n, float x)
int i, k; float s;
k=0; s=0;
for (i=0, ilt;=i-1,i++)
if (pow(z[i],2)gt;x) s=s+z[i]; k++;
if (kgt;0)s=s/k;
else cout lt;lt;"ochibka ";
return s;


//---------------------------------------------------------------------------