My C++ program compiles and works up until I call this function from main():

int uword(){fstream infile("numbers.txt");
fstream exfile("wordlist.txt");
string numb[numoflines];
string lines[numoflines];  
number = 1; 
line = 1;  
for(int i=0;!infile.eof();++i)
    {
    getline (infile,number);
    numb[i] = number;
    getline (exfile,line);
    lines[i] = line;
    }
infile.close();
exfile.close();    
string yourword;

Something here causes it to crash, in the debug it pops up with "An access violation (Segmentation Fault) raised in your program."