Question

My C++ program is give me extra characters in my output. Below is an example of input.txt and the section of code that reads it.

input.txt

(x/y), x = 20, y = 5;
((y>x)&(x<z)),x=5,y=10,z=3;

output I get:

Value=4 20, y=5;

Value=0z)), x=5, y=10, z=3;

ifstream fin;
        fin.open("input.txt");
    while (true)
    {
        symbolTable.init();
        fin.getline(line, SIZE);
        if (!fin)
            break;
        stringstream in(line, ios_base::in);
        in >> paren;
        cout << line << " ";
        expression = SubExpression::parse(in);
        in >> comma;
        parseAssignments(in);
        double result = expression->evaluate();
        cout << "Value = " << result << endl;
    }
    return 0;
}

Answer 1

try putting

while(getline(fin,line))

instead of while(true).

This would prevent duplicate values to be read from the file.