statistical analysis of a file of char

I having problem with my program, it is entering a if condition when I do not want it to. Below is my code. so far it's just supposed to count the occurences of each char.

#include <fstream>
#include <iostream>
#include <vector>
#include <string>
using namespace std;

void processFile(string str);

struct dataNode
{
    char charac;
    unsigned int count;
};

int main()
{
    string dataIn;
    string statString;
    int numOfUniqueChar = 0;
    ifstream inFile;//input file
    vector <dataNode> data(1);
    cout << "input file to do simple statistical analysis: ";
    cin >> dataIn;
    cout << "a string with no duplicates: ";
    cin >> statString;
    string dataString;

    inFile.open(dataIn.c_str());
    if(inFile.fail())
    {
        cout << "Input file opening failed.\n";
        exit(1);
    }
   
    while(!inFile.eof())
        getline(inFile, dataString);
   
    cout << dataString << endl;
   
    char toBeComp = dataString[0];
    for(int i = 0; i < dataString.length(); i++)
    {
        if(numOfUniqueChar == 0)
        {
            numOfUniqueChar++;
            dataNode temp;
            temp.charac = toBeComp;
            temp.count = 1;
            data[0] = temp;
        }
        else
        {
            bool foundSame = false;
            for( int j = 0; j < numOfUniqueChar; j++)
            {
                bool sameChar = (data[j].charac == toBeComp);
                if(sameChar);//<<<<<<<<<<<<<<<<<<why is it entering this loop when my input file is a string "abc"
                {
                    data[j].count++;
                    foundSame = true;
                }
                if(foundSame)
                break;
            }
            if(!foundSame)
            {
                dataNode temp2;
                temp2.charac = toBeComp;
                temp2.count = 1;
                data[numOfUniqueChar] = temp2;
                numOfUniqueChar++;
            }  
        }
        toBeComp = dataString[i + 1];
    }
   
    for(int i = 0; i < numOfUniqueChar; i++)
    {
        cout << data[i].charac << " " << data[i].count << endl;
    }    

    return 1;
}