Example: String Reversal (Auxiliary Array) in C

// String Reversal (Auxiliary Array)
#include <stdio.h> // Required for printf

// Custom string length function
int get_string_length(char* str) {
    int length = 0;
    while (str[length] != '\0') {
        length++;
    }
    return length;
}

// Function to reverse a string using an auxiliary array
void reverse_string_auxiliary(char* original_str, char* reversed_str) {
    int length = get_string_length(original_str);
    int i, j;

    // Copy characters from original_str to reversed_str in reverse order
    for (i = 0, j = length - 1; i < length; i++, j--) {
        reversed_str[i] = original_str[j];
    }
    reversed_str[length] = '\0'; // Null-terminate the reversed string
}

int main() {
    char myString[] = "computers";
    char reversed[50]; // Auxiliary array to store the reversed string

    printf("Original string: %s\n", myString);
    reverse_string_auxiliary(myString, reversed);
    printf("Reversed string: %s\n", reversed);
    
    char anotherString[] = "data structures";
    char reversed2[50];
    printf("\nOriginal string: %s\n", anotherString);
    reverse_string_auxiliary(anotherString, reversed2);
    printf("Reversed string: %s\n", reversed2);

    return 0;
}