Why char is unsigned?

This is a discussion on Why char is unsigned? within the C Programming forums, part of the General Programming Boards category; Hello , I read that range of the signed char in C is from -128 to 127 and for unsigned ...

  1. #1
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    Lightbulb Why char is unsigned?

    Hello ,

    I read that range of the signed char in C is from -128 to 127 and for unsigned char it is 0 to 255.

    How can char be signed / unsigned. Can we define negative char???

    Thanks

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    Try it! Print the value, see what happens.

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    Quote Originally Posted by fenilshah03 View Post
    Hello ,

    I read that range of the signed char in C is from -128 to 127 and for unsigned char it is 0 to 255.

    How can char be signed / unsigned. Can we define negative char???

    Thanks
    A char is just a 1-byte data type.
    If you understand what you're doing, you're not learning anything.

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    To Subsonics,

    which value are you telling me to print?

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    A negative char...

    Code:
    #include <stdio.h>
    
    int main(void)
    {
      char ch = -10;
      printf("%d\n", ch);
      return 0;
    }
    If you understand what you're doing, you're not learning anything.

  6. #6
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    A simple char by itself may be signed or unsigned.

    If you want to make sure, you need to qualify
    signed char foo = -10;
    unsigned char bar = 200;
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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    Quote Originally Posted by itsme86 View Post
    A negative char...

    Code:
    #include <stdio.h>
    
    int main(void)
    {
      char ch = -10;
      printf("%d\n", ch);
      return 0;
    }
    ok
    Now i can understand that char can have integer value stored in it..

    thanx

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    Quote Originally Posted by fenilshah03 View Post
    ok
    Now i can understand that char can have integer value stored in it..

    thanx
    As the others have been explaining the C type char is simply a 1 byte (usually 8bits) integer.

    We use it for strings because most ascii text is byte sized.

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