Variable and Data Type on C Programming Language

There are 4 groups of standard data type of C programming language, i.e.:

1. Character/string
   Data type:
   • char
     1 character, printf code: %c
   • char*/string
     >=1 characters (string),printf code: %s
2. Integer
   Data type:
   • char(8 bit)
     signed: -128 up to 127, printf code: %d/%i
     unsigned: 0 s/d 255, printf code: %u
   • short int(16 bit)
     signed: -32768 up to 32767, printf code: %d/%i
     unsigned: 0 s/d 65545, printf code: %u
   • int (32 bit)
     signed: -2147483648 up to 2147483647, printf code: %d/%i
     unsigned: 0 s/d 4294967295, printf code: %u
   • long int (32 bit)
     signed: -2147483648 up to 2147483647, printf code: %ld/%li
     unsigned: 0 s/d 4294967295, printf code: %lu
3. Fraction
   Data type:
   • float (32 bit): 3.4E-38 up to 3.4E+38
     ± 7 digit desimal, printf code: %f/%e
   • double (64 bit): 1.7E-308 up to 1.7E+308
     ± 15 digit desimal, printf code: %f/%e
   • long double (64 bit): 3.4E-4932 up to 3.4E+4932
     ± 15 digit desimal, printf code: %Lf/%Le
4. True or False logic
   Data type: boolean, content True or False value

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