Strings in C?

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  1. #1
    Registered User CompiledMonkey's Avatar
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    Strings in C?

    Where are the Strings in C?

  2. #2
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    They are nowhere!!!!

    Strings in C are just characters arrays!!!

    to declare one it's just for example

    char string[] = "thisisastring";

    and it will create a character array containing "thisisastring" or

    char string[10];

    and it will create an array with 10 positions

    I think you should read a tutorial

  3. #3
    Registered User CompiledMonkey's Avatar
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    Re: They are nowhere!!!!

    That makes perfect sense. I'm just glancing over C and found it interesting they don't just use String. I guess using a char array does give you better control though. Thanks.

  4. #4
    ATH0 quzah's Avatar
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    There is no string type in C. Furthermore, while it is true that they're arrays of characters, there is one omitted fact that must hold true for it to be considered a string:

    All strings are null terminated. Without being null terminated, it is not a string, but rather its just an array of characters.

    char array[3] = { 'a', 'b', 'c' };

    This is not a string.

    char array[4] = { 'a', 'b', 'c', '\0' };

    This is a string.

    Strings may be actual arrays, or may be allocated via pointers, such as:

    char *s = "mystring";

    In this case, because we're using the double quotes, the null is automaticly provided.

    char *s;

    s = malloc( 10 );
    strncpy( s, "hello", 5 );
    s[5] = '\0';

    Here we've manually allocated some space, copied in some data to said space, and just for good measure, provided a null.

    I could have just used 'strcpy' and had it automaticly provide the null for me. Or, I could have used 6 for the size instead of 5, and it would have copied the null there also with strncpy.

    Quzah.
    Hope is the first step on the road to disappointment.

  5. #5
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    Smile

    Strings in C are variable length character arrays terminated with the null character.
    Mr. C: Author and Instructor

  6. #6
    Registered User CompiledMonkey's Avatar
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    Ok, using this code, how can I have the actual string displayed instead of the memory address?

    Code:
    #include <stdio.h>
    
    void showStringValues()
    {
    	char *string = "Some Text";
    
    	printf("%d", string);
    }
    
    int main()
    {
    	showStringValues();
    
    	return 0;
    }

  7. #7
    Registered User unixOZ's Avatar
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    Code:
    char something[] = "hello";
    printf("%s", something);
    /* more code */

  8. #8
    Registered User CompiledMonkey's Avatar
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    Thanks!

    So what's the difference between using %d and %s?

  9. #9
    Registered User unixOZ's Avatar
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    %s is for characters, while %d is for integers

  10. #10
    Registered User CompiledMonkey's Avatar
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    Thanks.

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