String comparison question

Say I have a char array called dave, with elements dave[0] = 'h' and dave[1] = 'i'

What is the best way of finding out if they char array is equal to 'hi'?

Is the best way of doing comparing each element at a time such as if(dave[0] == 'h' && dave[1] == 'i') or is there a C function which does this for me?

Thanks

Read about function named : strcmp with prototype in string.h!

K safe.

strcmp will work, provided both strings are exactly that - strings. A string in C is terminated with a zero byte, thus dave[2] would have to be 0. I mention that detail because you don't make it clear in your post as to whether this is indeed the case.

Failing that, there is memcmp - compare memory for a specified number of bytes.

Hang on a minute, I'm comparing it to find out if the string is a certain word, I'm not comparing 2 different strings.

I only have one string and I want to compare that with a variety of words.

Is there a function that can help me with this?

Could I do...?

Code:

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strcmp(dave,"hi");

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>I only have one string and I want to compare that with a variety of words.
You would need to write this manually. Fortunately, it's relatively simple:

Code:

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char buf[BUFSIZ]; /* Your string */

if ( fgets ( buf, sizeof buf, stdin ) != NULL ) {
  char *words[] = {"This","is","a","test",NULL};
  size_t i;

  for ( i = 0; words[i] != NULL; i++ ) {
    if ( strcmp ( buf, words[i] ) == 0 ) {
      /* Matching word */
    }
  }
}

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Quote:

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Originally Posted by Wiretron

Could I do...?

Code:

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strcmp(dave,"hi");

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So this wouldn't work?

Quote:

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Originally Posted by Wiretron

Say I have a char array called dave, with elements dave[0] = 'h' and dave[1] = 'i'

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it will only work if dave[2] == '\0'
Kurt