Как задать дополнительное условие?

#include <iostream> 
#include <fstream> 
#include <string.h>
 
using namespace std; 
int main() 
{   
    setlocale(0, "rus");
    const char size = 100; 
    ifstream infile; 
    ofstream outfile("copy.txt"); 
    char buffer[size];
    infile.open("Text.txt"); 
 
    while(!infile.eof()) 
    { 
        infile >> buffer; 
        int size = strlen (buffer);
        if(buffer[0] == 'q' || buffer[0] == 'w' || buffer[0] == 'r' || buffer[0] == 't' || buffer[0] == 'p' || buffer[0] == 's' || buffer[0] == 'd' || buffer[0] == 'f' || buffer[0] == 'g' || buffer[0] == 'h' || buffer[0] == 'j' || buffer[0] == 'k' || buffer[0] == 'l' || 
        buffer[0] == 'z' || buffer[0] == 'x' || buffer[0] == 'c' || buffer[0] == 'v' || buffer[0] == 'b' || buffer[0] == 'n' || buffer[0] == 'm' &&
            buffer[size] == 'a' || buffer[size] == 'e' || buffer[size] == 'i' || 
            buffer[size] == 'u' || buffer[size] == 'o' || buffer[size] == 'y') 
            outfile << buffer << " " << endl; 
        } 
 
      system("Pause");
}

int size = strlen (buffer) - 1;

if((buffer[0] == 'q' || buffer[0] == 'w' || buffer[0] == 'r' || buffer[0] == 't' || buffer[0] == 'p' || buffer[0] == 's' || buffer[0] == 'd' || buffer[0] == 'f' || buffer[0] == 'g' || buffer[0] == 'h' || buffer[0] == 'j' || buffer[0] == 'k' || buffer[0] == 'l' || 
        buffer[0] == 'z' || buffer[0] == 'x' || buffer[0] == 'c' || buffer[0] == 'v' || buffer[0] == 'b' || buffer[0] == 'n' || buffer[0] == 'm') &&
            (buffer[size] == 'a' || buffer[size] == 'e' || buffer[size] == 'i' || 
            buffer[size] == 'u' || buffer[size] == 'o' || buffer[size] == 'y'))