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What is the difference between unsigned and unsigned int?
This question was already answered for C (there is no difference):
Difference between unsigned and unsigned int in C
I am interested in knowing whether there is any practical difference in C++. Are they the same type?
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Unsigned int is only guaranteed to be able to hold the numbers between 0 and 65535 (inclusive), while unsigned long int is guaranteed to be able to hold the numbers between 0 and 4 294 967 295. Those are just the minimums, though.
An unsigned Integer means the variable can hold only a positive value. This format specifier is used within the printf() function for printing the unsigned integer variables. Syntax: printf(“%u”, variable_name);
The int type in C is a signed integer, which means it can represent both negative and positive numbers. This is in contrast to an unsigned integer (which can be used by declaring a variable unsigned int), which can only represent positive numbers.
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.
They are the same type, as in C. No differences at all.
Of course, unsigned can be used as a qualifier for other integral types. But by default, unsigned is the same as unsigned int.
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