Doubt in strcmp

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I’m in doubt on a line of code:

if(strcmp(novo->nome,aux->nome)>=0)

How does your comparison occur? Being that the name is a char!

c

  • Being nome a char, that statement has error. With the #include <string.h> compiler detects error and warns programmer.

  • @pmg error why?

  • @Jorgeb.: Mistake because the guy char is not compatible with the type char *. The function strcmp() compares the content of two pointers; not the value of two characters.

1 answer

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The strcmp method tests the equality of strings.

  1. Returns a negative number if string1 is less than string2;
  2. Returns zero if the two strings are equal;
  3. Returns a positive number if string1 is greater than string2.

The method declaration is as follows::

int strcmp ( const char * str1, const char * str2 );

So returns an integer.

Soon, in your code, will enter the scope of if when novo->nome is equal to or greater than aux->nome

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