Validate a string as a valid dollar amount.

Ok, here's all the code. I know there are other problems with the code, but don't worry about those mistakes...unless of course you want to fix everything :)

#include <iostream>
#include <iomanip>
#include <ctype.h>
#include <string.h>

using namespace std;

const int MAXRECS = 3;            //max no. of records.
const int MAXTITLE = 35;      //max no. of characters in title.
enum DVDGenre{ACTION, MYSTERY, COMEDY, ROMANCE}Genre;


struct DVD
{
      char Title[25];
      int Year;
      double Price;
      int Genre;
};

void populate(struct DVD &theDVD);
void display(struct DVD &theDVD, int);

int main()
{
      struct DVD myDVD[3];

      for (int i=0; i<3; i++)
            populate(myDVD[i]);

      for (int i=0; i<3; i++)
            display(myDVD[i], i);

}

void populate(DVD &theDVD)
{
      
            int tempYear=0;
            double tempPrice;
            char TempTitle[MAXTITLE] = "";
            int inputGenre;

            cout << "Enter the movie title: ";
            cin.getline(TempTitle,MAXTITLE);
            for(int v = 0; TempTitle[v] != '\0'; v++) //convert title to uppercase
                  TempTitle[v] = toupper(TempTitle[v]);
            strcpy(theDVD.Title, TempTitle);
            
            
            for(int x = 0; x!=1;) //year validation
            {
                  char inputYear[10]="";
                  
                  cout << "\nEnter the year of release: ";
                  cin.getline(inputYear, 10);
                  if(strlen(inputYear) != 4)
                        cout << "\nInvalid year" << endl << endl;
                        
                  if (!isdigit(inputYear[0]) ||
                        !isdigit(inputYear[1]) ||
                        !isdigit(inputYear[2]) ||
                        !isdigit(inputYear[3]))  
                        cout << "\nInvalid year" << endl << endl;
                  
                  tempYear = atoi(inputYear);

                  if(tempYear < 1910 || tempYear > 2003)
                        cout << "\nInvalid year" << endl << endl;
                  else x++;
                        
            }
            theDVD.Year = tempYear;
            

            for(int s = 0; s!=1;)
            {
                  char inputPrice[10];
                  
                  cout << "\nEnter the DVD price: ";
                  cin.getline(inputPrice, 10);
                  int len = strlen(inputPrice);

            if (len > 5)
                  cout << "Price cannot be exceed $99.99" << endl << endl;

            if (len = 4 && !ispunct(inputPrice[1]))
                  cout << "Invalid Price" << endl << endl;

            if (len = 4 && (!isdigit(inputPrice[0]) ||
                              !isdigit(inputPrice[2]) ||
                              !isdigit(inputPrice[3])))
                  cout << "Invalid Price" << endl << endl;

            if (len = 5 && !ispunct(inputPrice[2]))
                  cout << "Invalid Price" << endl << endl;

            if (len = 5 && (!isdigit(inputPrice[0]) ||
                              !isdigit(inputPrice[1]) ||
                              !isdigit(inputPrice[3]) ||
                              !isdigit(inputPrice[4])))
                  cout << "Invalid Price" << endl << endl;
                  

            else
                  {      
                  tempPrice = atof(inputPrice);
                  s++;
                  }
            }
            theDVD.Price = tempPrice;


            
            do
            {
                  cout << "[0]ACTION  [1]MYSTERY  [2]COMEDY  [3]ROMANCE" << endl;
                  cout << "Choose the genre: ";
                  cin >> inputGenre;
                  

            }while(inputGenre > 3 || inputGenre < 0);

            theDVD.Genre = inputGenre;
      
}
void display(DVD &theDVD, int i)
{
      
            cout << endl << endl <<setiosflags(ios::left)
                  << setw(8) << i << "  " << theDVD.Title
                  << setw(5) << theDVD.Year << setw(6) << theDVD.Price << "  ";
                  if(theDVD.Genre = 0)
                        cout << "ACTION";
                  else if(theDVD.Genre = 1)
                        cout << "MYSTERY";
                  else if(theDVD.Genre = 2)
                        cout << "COMEDY";
                  else if(theDVD.Genre = 3)
                        cout << "ROMANCE";



            return;
}