Difference between overflow and underflow | Definition and explanation | Chapter no 09 Overflow & Underflow Each type of numeric variable has a minimum and maximum value. Any value between these limits can be assigned to it. When a value that exceeds the limits is assigned to a variable, an error occurs. When the value assigned is more than the maximum allowable limit, an overflow occurs. For example, the maximum exponent value of a floating point value is 38. When the following code is executed