Comparing strings read from console with strcmp function - C String

Description

Comparing strings read from console with strcmp function

Demo Code

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

#define MAX_LENGTH 21                               // Maximum char array length

int main(void)
{
  char word1[MAX_LENGTH];                           // Stores the first word
  char word2[MAX_LENGTH];                           // Stores the second word

  printf("Type in the first word (maximum %d characters): ", MAX_LENGTH - 1);
  int retval = scanf("%s", word1, sizeof(word1)); // Read the first word
  if(EOF == retval)
  {/*w ww. ja  va 2  s .co m*/
    printf("Error reading the word.\n");
    return 1;
  }

  printf("Type in the second word (maximum %d characters): ", MAX_LENGTH - 1);
  retval = scanf("%s", word2, sizeof(word2));     // Read the second word
  if(EOF == retval)
  {
    printf("Error reading the word.\n");
    return 2;
  }
  // Compare the words
  if(strcmp(word1,word2) == 0)
    printf("You have entered identical words");
  else
    printf("%s precedes %s\n",
                    (strcmp(word1, word2) < 0) ? word1 : word2,
                    (strcmp(word1, word2) < 0) ? word2 : word1);
  return 0;
}

Result

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