write down the maximum and minimum hexidecimal and decimal values achievable for each of the following data types in C:
uin8_t unsigned 8 bit integer
int8_t signed 8 bit integer
uin16_t unsigned 16 bit integer
int32_t signed 32 bit integer
explain everything
Unsigned 8-bit integer:
In case of 8-bit unsigned integer, we can represent integers from 0 to 28-1=255.
When all 8 bits are 0 then it represents 0 and when all 8 bits are 1 then it represents 255.
Hence minimum 8-bit unsigned integer: 0(decimal) and 0(hexadecimal)
Maximum 8-bit unsigned integer: 255(decimal ) and FF(hexadecimal).
Signed 8-bit integer:
In case of 8-bit signed number , most significant(left most) bit is used for sign bit(o for +ve and 1 for -ve).
So, positive numbers are 00000000 to 01111111. i.e. in decimal 0 to 27-1=127.
And negative numbers are, 10000000(-128) to 10000001(-1).
Hence minimum 8-bit signed integer: -128(decimal) and -80(hexadecimal)
Maximum 8-bit unsigned integer: 127(decimal ) and 7F(hexadecimal).
Unsigned 16-bit integer:
In case of 16-bit unsigned integer, we can represent integers from 0 to 216-1=65536.
When all 16 bits are 0 then it represents 0 and when all 16 bits are 1 then it represents 65536.
Hence minimum 8-bit unsigned integer: 0(decimal) and 0(hexadecimal)
Maximum 8-bit unsigned integer: 65536(decimal ) and 10000(hexadecimal).
Signed 16-bit integer:
In case of 16-bit signed number , most significant(left most) bit is used for sign bit(o for +ve and 1 for -ve).
So, positive numbers are 0000-0000-0000-0000 to 0111-1111-1111-1111. i.e. in decimal 0 to 215-1=32767.
And negative numbers are, 1000-0000-0000-0000(-32768) to 1000-0000-0000-0001(-1).
Hence minimum 16-bit signed integer: -32768(decimal) and -8000(hexadecimal)
Maximum 8-bit unsigned integer: 32767(decimal ) and 7FFF(hexadecimal).
write down the maximum and minimum hexidecimal and decimal values achievable for each of the following...
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