#include <stdio.h>
 
int main() {
    char str1[100], str2[100];
    char *ptr1, *ptr2;
    int flag = 0;
 
    // Input two strings
    printf("Enter first string: ");
    fgets(str1, sizeof(str1), stdin);
    printf("Enter second string: ");
    fgets(str2, sizeof(str2), stdin);
 
    // Initialize pointers
    ptr1 = str1;
    ptr2 = str2;
 
    // Compare character by character
    while (*ptr1 != '\0' && *ptr2 != '\0') {
        if (*ptr1 != *ptr2) {
            flag = 1;
            break;
        }
        ptr1++;
        ptr2++;
    }
 
    // If lengths differ
    if (*ptr1 != *ptr2) {
        flag = 1;
    }
 
    // Display result
    if (flag == 0)
        printf("Strings are equal.\n");
    else
        printf("Strings are not equal.\n");
 
    return 0;
}