Example: String Comparison in C

// String Comparison
#include <stdio.h>
#include <string.h> // Required for strcmp()

int main() {
    // Step 1: Declare multiple strings for comparison
    char str1[] = "apple";
    char str2[] = "apple";
    char str3[] = "banana";
    char str4[] = "apply";

    int result;

    // Step 2: Compare str1 and str2 (identical)
    result = strcmp(str1, str2);
    printf("Comparing \"%s\" and \"%s\": Result = %d (Expected 0)\n", str1, str2, result);

    // Step 3: Compare str1 and str3 (str1 < str3)
    result = strcmp(str1, str3);
    printf("Comparing \"%s\" and \"%s\": Result = %d (Expected negative)\n", str1, str3, result);

    // Step 4: Compare str3 and str1 (str3 > str1)
    result = strcmp(str3, str1);
    printf("Comparing \"%s\" and \"%s\": Result = %d (Expected positive)\n", str3, str1, result);

    // Step 5: Compare str1 and str4 (str1 < str4)
    result = strcmp(str1, str4);
    printf("Comparing \"%s\" and \"%s\": Result = %d (Expected negative)\n", str1, str4, result);

    // Example with strncmp (compare first 'n' characters)
    char password_stored[] = "secret123";
    char password_input[] = "secret12345";

    // Compare only the first 9 characters
    result = strncmp(password_stored, password_input, 9);
    printf("\nComparing first 9 chars of \"%s\" and \"%s\": Result = %d (Expected 0)\n",
           password_stored, password_input, result);

    return 0;
}