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unsigned

Example: unsigned

Used in variable declarations as a Type-Specifier to indicate that the variable cannot be marked with a negative sign. The minimum value is 0. It applies to char, int, and long data types.

The following table illustrates the difference between signed and unsigned variables.

Type Size Unsigned Signed (normal)
char 8 bits 0 to 255 -128 to 127
int 16 bits 0 to 65,535 -32,768 to 32,767
long 32 bits 0 to 4,294,967,295 -2,147,483,648 to 2,147,483,647