- Solidity is a statically typed language
- It has various data types to handle different kinds of data.
- Solidity data types define the kind of data that can be stored in variables
- The possible value are constant (true or false)
- Defualt value for booleans false
- Name use in code bool
- Example value true or false
**- IT is essential for expressing conditional logic in smart contracts **
contract BoolExample {
// Defualt boolean Value False
// boolean variable return true or false
bool isApproved;
bool isMarried;
bool isActive = true;
bool study = false;
}-
Integers are used to represent whole numbers
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Sign and unsign integers of various sizes
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Name use in code (int-uint)
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int these are signed integers that hold both negative and positive values
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uint these are unsigned integers that can hold 0 and positive values only
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Integers sign various size(int8-int16-int32-int64-int128-int256)
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Integers unsign various size(uint8-uint16-uint32-uint64-uint128- uint256)
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Integers are restricted to a certain range For example uint8 take value from zero up to 2**8 -1 (0–255)
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uint16 (0–65535)
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uint by defualt equals uint256
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Signed integers can represent negative values
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unsigned integers can only represent positive values.
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Fixed point numbers are not fully supported by Solidity yet.
contract integerExample{
int wheather= -2;
int airPodes;
uint iphonePrice;
uint8 macPrice=255; // only number(0-255)
uint16 ipadPrice= 65535; // only number(0-65535_
}