unsigned char in C with Examples
char is the most basic data type in C. It stores a single character and requires a single byte of memory in almost all compilers.
Now character datatype can be divided into 2 types:
- signed char
- unsigned char
unsigned char is a character datatype where the variable consumes all the 8 bits of the memory and there is no sign bit (which is there in signed char). So it means that the range of unsigned char data type ranges from 0 to 255.
Syntax:
unsigned char [variable_name] = [value]
Example:
unsigned char ch = 'a';
- Initializing an unsigned char: Here we try to insert a char in the unsigned char variable with the help of ASCII value. So the ASCII value 97 will be converted to a character value, i.e. ‘a’ and it will be inserted in unsigned char.
// C program to show unsigned char
#include <stdio.h>
int
main()
{
int
chr = 97;
unsigned
char
i = chr;
printf
(
"unsigned char: %c\n"
, i);
return
0;
}
Output:unsigned char: a
Initializing an unsigned char with signed value: Here we try to insert a char in the unsigned char variable with the help of ASCII value. So the ASCII value -1 will be first converted to a range 0-255 by rounding. So it will be 255. Now, this value will be converted to a character value, i.e. ‘ÿ’ and it will be inserted in unsigned char.
// C program to show unsigned char
#include <stdio.h>
int
main()
{
int
chr = -1;
unsigned
char
i = chr;
printf
(
"unsigned char: %c\n"
, i);
return
0;
}
Output:unsigned char: ÿ
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