About a code.

Question

How would I validate the input of the length width and area to be greater than 0. Using just if/ if else statements. My output is still allowing 0 and I dont want that.

if (choose < 1 || choose > 4)
{
cout << "Invalid value..Please enter again.\n";
}
else if (choose == SQUAREROOM)
{
cout << "Enter the width of the room.\n";
cin >> width;
area = width*width;
cout << "The width of the squareroom is \n" << area << endl;
}
else if (choose == RECTANGULARROOM)
{
cout << "Enter the length and width of the room.\n";
cin >> length >> width;
area = length*width;
cout << "The area of the rectangular room is \n." << area << endl;
}
else if (choose == ROUNDROOM )
{
cout << "Enter the radius of the room.\n";
cin >> radius;
area = PI*radius*radius;
cout << "The area of the roundroom is \n" << area << endl;
}
else if (choose == QUIT )
{
cout << "Thank you for using Haverly's Calculator. \n";
}
return 0;
}

Answer 1

You are not validating any user input for width or height at all.

Use an if statement.