#include<iostream.h>
#include<string.h>
using namespace std;
 
class HowEasy
{
	public:
		string statement;
                int flag,letterCount,wordCount;
                int pointVal (string);
};
 
int pointVal (string s)
{
    int len = s.length();
    int avgCount,flag=0,i,wordCount=0,letterCountMain=0,letterCountTemp=0;
    for(i=0; i<len ;i++)
    {
        //if((int(s[i]>=65) && int(s[i]<=90)) || int((s[i]>=97) && int(s[i]<=122)))
        if(((s[i]>=65)&&(s[i]<=90))||((s[i]>=97)&&(s[i]<=122)))
        {
            if(flag==0)
            {
                letterCountTemp+=1;
            }
        }
        else
        {
            flag=1;
            letterCountTemp=0;
        }
        if(s[i]==' ')
        {
            if(flag==0)
            {
                letterCountMain+=letterCountTemp;
                wordCount+=1;
            }
            flag=0;
        }
        if(s[i]=='.')
        {
            if(flag==0 && s[i+1]!='.')
            {
                letterCountMain+=letterCountTemp;
                wordCount+=1;
            }
            flag=0;
        }
    }
    cout << "The no of letters in the problem statement is displayed below: " << letterCountMain << endl;
    cout << "The no of words in the problem statement is displayed below: " << wordCount << endl;
    avgCount = letterCountMain/wordCount;
    cout << "The avg letter count in the problem statement is displayed below: " << avgCount << endl << endl;
    if(avgCount<=3)
    {
        return 250;
    }
    else if((avgCount==4)||(avgCount==5))
    {
        return 500;
    }
    else if(avgCount>6)
    {
        return 1000;
    }
}
 
int main()
{
    HowEasy class1;	
    char t;
    cout << "Press any key to type the problem statement: ";
    cin >> t;
    cin.get();
    cout << "Type the problem statement: ";
    getline(cin, class1.statement);
    cout << "The problem statement's point value is :" << class1.pointVal(class1.statement);
}

#include<iostream>
#include<string>
#define isalpha(a) (((a)>='A' && (a) <= 'Z') ||((a)>='a' && (a) <= 'z'))
 
using namespace std;
 
class HowEasy
{
    public:
      int pointVal (string);
      string statement;
    private:
       int letterCount,wordCount;
 
};
 
int HowEasy::pointVal (string s)
{
    int len = s.length();
    int avgCount, i ;
    wordCount=0,letterCount=0 ;
    for(i=0; i<len ;i++)
    {
        if(isalpha(s[i]))
            letterCount++;
        else if(s[i]==' ')
            wordCount++;
        else
        { 
            while ( !isalpha(s[i+1])) i++ ;
            wordCount++;
        }
    }
    cout << "The no of letters in the string: " << letterCount << endl;
    cout << "The no of words in the string: " << wordCount << endl;
    avgCount = letterCount/wordCount;
    cout << "The avg letter count in the string: " << avgCount << endl ;
    if(avgCount<=3)
        return 250;
    else if(avgCount<=5)
        return 500;
    else 
        return 1000;
}
 
int main()
{
    HowEasy class1;	
    cout << "Type the problem statement: ";
    getline(cin, class1.statement);
    cout << "The string's point value is :" << class1.pointVal(class1.statement);
    cin.get() ;
}

 your code did not compile:
 
errors linking:
 
HowEasy-stub.o.(.text+0x534) : In function 'main':
: multiple definition of 'main'
HowEasy.o.(.text+0x3fc): first defined here
/usr/bin/ld: warning: size of symbol 'main' changed from 269 in HowEasy.o to 620 in HowEasy-stub.o
collect2: ld returned 1 exit status