What values can number controls in a form accept?

Number controls in a form are designed to accept a range of numeric values, enabling users to input both positive and negative integers as well as decimal numbers. This flexibility is particularly useful in various applications where the representation of real-world measurements, financial figures, or calculations is needed.

Allowing both positive and negative integers ensures a comprehensive input capability that can cover a wider array of scenarios such as temperature measurements, financial balances (which can be negative when considering debt), and other numerical analyses. Including decimals further enhances this capability, accommodating situations where precise values are essential, such as weight, currency, or any quantitative data that requires fractional representation.

The other options are more restrictive and do not capture the full range of inputs that a number control can handle. Only accepting positive integers would limit input possibilities to a narrow range, and restricting input exclusively to decimal numbers or strings of numeric characters would omit important uses and functionalities of a number control in data entry forms. Thus, the correct understanding of number controls encompasses the ability to accept positive and negative integers as well as decimal numbers.