signed vs unsigned
This page on signed vs unsigned describes difference between signed and unsigned integers. Let us understand the difference with short integer having storage of 2 bytes as allocated in 'C' language.
In this case, signed integer will have value range from -32768 to +32767 while unsigned integer will have range from 0 to 65535.
Signed integer can store either positive or negative number. Unsigned integer can store only postive value in the variable.
%d is used to print signed integer in the printf statement while %u is used to print unsigned integer in the printf statement.
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