определение функций

#include<iostream>
char test1(char X,char Y,char Z);
char test2(char X,char Y,char Z);
char test3(char X,char Y,char Z);
int main()
{
char test1(char X,char Y,char Z)
{
char X[n] = {12, 95, 1, 100, 88, 111, 81, 50, 11, 2};
char Y[n]= {8, 20, 1, 99, 0, 15, 100, 40, 30, 3};
char Z[n]= {0, 65, 1, 1, 50, 50, 56, 1, 6, 5};
}
      char test2(char X,char Y,char Z)
     {
      int X[n] = {125,111,100,90,114,100};
      int Y[n]= {30,40,11,90,20,0};
      int Z[n]= {111,100,50,90,100,1};
      }
char test3(char X,char Y,char Z)
      {
int X[n]= {88,78,68,10};
int Y[n]= {10,69,77,20};
int Z[n]= {9,70,68,4};
      }
      char test4(char X,char Y,char Z)
      {
      int X[n] = {64};
      int Y[n]= {70};
      int Z[n]= {88};
      }
char test5(char X,char Y,char Z)
{
int X[n] = {64};
int Y[n]= {65};
int Z[n]= {88};
         }
return 0;
}

#include <iostream.h>
void Input(double *x, int n, char *c);
void Sort(double *x, int n);
void Output(double *x, int n, char *c);
int main ()
{
 char c[]="a";
 int a[10];
 Input(a, 10, c);
 Sortz(a,10);
 Output(a,10,c);
 return 0;
}
void Input(double *x, int n, char *c)
{
 int i;
 for (i=0; i<=n; ++i)
 {
  std::cout<<c<<"["<<i<<"]=";
  std::cin>>x[i];
 }
 std::cout<<endl;
}
void Sort(double *x, int n)
{
 int i;
 int j;
 double t;
 for (i=0; i<n; ++i)
 {
  for (j=i+1; j<=n; ++j)
  {
   if (a[i]>a[j])
   {
    t=a[i];
    a[i]=a[j];
    a[j]=t;
   }
  }
 }
}
void Output(double *x, int n, char *c)
{
 int i;
 for (i=0; i<=n; ++i)
 {
  std::cout<<c<<"["<<i<<"]="<<x[i];
  std::cin>>x[i];
 }
 std::cout<<endl;
}

#include <iostream.h>
void Input(double *x, int n, char *c);
void Sort(double *x, int n);
void Output(double *x, int n, char *c);
int main ()
{
 char c[]="a";
 int a[10];
 Input(a, 10, c);
 Sortz(a,10);
 Output(a,10,c);
 return 0;
}
void Input(double *x, int n, char *c)
{
 double *i;
 double *j;
 e=a+n-1;
 for (i=a; i<=e; ++i)
 {
  std::cout<<c<<"["<<(i-a)<<"]=";
  std::cin>>*i;
 }
 std::cout<<endl;
}
void Sort(double *x, int n)
{
 double *i;
 double t;
 for (i=a+n-1; i>a; --i)
 {
  for (j=i-1; j>=a; --j)
  {
   if (*i<*j)
   {
    t=*i;
    *i=*j;
    *j=t;
   }
  }
 }
}
void Output(double *x, int n, char *c)
{
 double *i;
 double *e;
 e=a+n-1;
 for (i=a; i<=e; ++i)
 {
  std::cout<<c<<"["<<(i-a)<<"]="<<x[i];
  std::cin>>*i;
 }
 std::cout<<endl;
}