Question

I dont know why this will not work, i need to swap the two chars enterd as a and b, it compiles but all the chars are replaced with the char inputted as b, any advise?

while (n != exist)
{
    cout<<"What is the letter you want to swap?"<<endl;
    cin>>a;             
    cout<<"What is the letter you want to swap it with?"<<endl;
    cin>>b;
    if (inFile.is_open())
    {
        while (inFile.good())
        {   
            inFile.get(c);
            if( c = a )
            {
                outFile<< b;
            }
            else if (c = b)
            {
                outFile<< a;
            }
            else
            {
                outFile<< c;
            }                               
        }                           
    }
    else
    {
        cout<<"Please run the decrypt."<<endl;
    }
    cout<<"Another letter? <n> to stop swapping"<<endl;
    cin>>n;
}               

Answer 1

In if and else if you need to use == instead of =. In C++/C you use == for comparison and = for assignment.