^
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The ^ operation raises a numerical value to an exponential value expressing how many times the value is multiplied by itself.
Syntax
- return_value = number ^ {whole_exponent|(fractional_exponent)}
Description
- The number value can be any type literal or variable numerical value.
- Exponents can be any positive or negative integer or fractional numerical value inside of parenthesis brackets.
- If the exponent is zero, the value returned is 1.
- Fractional(or decimal point) exponents MUST be enclosed in () brackets and will return the fractional exponential root of a value.
- Exponential operations are done first in the QBasic order of operations.
- The square root of a number can be returned by the SQR function or by using an exponent of (1 / 2). Brackets required.
- Values returned may be expressed using exponential or Scientific notation using E for SINGLE or D for DOUBLE precision.
- WARNING: Exponential returns may exceed numerical type limitations and create an overflow error!
Examples
- Example 1
- Getting the cube root of a number.
INPUT "Enter a number to calculate it's cube root: ", num$ number! = VAL(num$) 'gets single number value cuberoot# = number! ^ (1 / 3) PRINT cuberoot# 'double type variable for accuracy |
Details The value returned will most likely be a SINGLE or DOUBLE value. Make sure the return variable type matches the likely program operations! |
Enter a number to calculate it's cube root: 144 5.241482788417793 |
See also