Use unsigned variables : Data Type « Data Type « C Tutorial

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C Tutorial » Data Type » Data Type 
2. 1. 4. Use unsigned variables

When declaring a numeric variable in C, you can use 'signed' or 'unsigned'.

Variable is signed unless you specifically type unsigned before the variable type:

unsigned int sh = 26;
  1. The standard int variable can hold values from -32,768 up to 32,767.
  2. That's half negative numbers, from -32,786 to -1, and then half positive numbers, from 0 up to 32,767.
  3. An unsigned number means that the variable holds only positive values.
  4. Your typical unsigned int has a range from 0 to 65,535.
2. 1. Data Type
2. 1. 1. What is a data type
2. 1. 2. Introduction to Data Types
2. 1. 3. C Numeric Data Types
2. 1. 4. Use unsigned variables
2. 1. 5. Signed and Unsigned Variables
2. 1. 6. Get maximum and minimum values of data type
2. 1. 7. Multiple declarations
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