cómo usar la función strcmp en el ejemplo de código c ++

Ejemplo 1: c ++ compare char

// syntax
#include <cstring> // this needs to be at the top of the script/code
std::strcmp(<1st-char>,<2nd-char>)
  
// example (assuming: char_1 = 'Compare me'; char_2 = 'Compare_me')
#include <cstring>
if (std::strcmp(char_1,char_2) == 0) {
 std::cout << "The char's that you compared match!" << std::endl; 
}
else {
 std::cout << "The char's that you compared DON'T match" << std::endl; 
}

// OUTPUT: The char's that you compared match!

/*
NOTE: the following outputs of std::strcmp indicate:
[less than zero] : left-hand-side appears before right-hand-side in lexicographical order
[zero] : the chars are equal
[greater than zero] : left-hand-side appears after right-hand-side in lexicographical order
*/

Ejemplo 2: strcmp c

// use: strcmp(string1, string2);

string a = "words";
string b = "words";

if (strcmp(a, b) == 0)
{
	printf("a and b match");
  	// strcmp returns 0 if both strings match
}

else
{
	printf("a and b don't match");
  	// strcmp returns anything else if the strings dont match
}

Ejemplo 3: strcmp c ++

#include<stdio.h> 
#include<string.h> 


int main() 
{  
      
    char char1[] = "coucou"; 
    char char2[] = "coucou"; 
      
  	if( strcmp(char1, char2) == 0 )
       printf("Strings are the same");
  
  	else
      prinf("Strings are differentes");
  
  
    return 0; 
}

Ejemplo 4: strcmp c ++

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

// returning value | indicates
// <0	the first character that does not match has a lower value in ptr1 than in ptr2
// 0	the contents of both strings are equal
// >0	the first character that does not match has a greater value in ptr1 than in ptr2

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