Example: String Reversal using Pointers in C

C
C++
C#
Java
Python
PHP
// String Reversal using Pointers
#include <stdio.h>
#include <string.h>

void reverseStringPointers(char *str) {
    char *start = str;
    char *end = str + strlen(str) - 1;
    char temp;

    while (start < end) {
        // Step 1: Store character pointed to by 'start'
        temp = *start;
        // Step 2: Replace character at 'start' with character at 'end'
        *start = *end;
        // Step 3: Replace character at 'end' with stored 'start' character
        *end = temp;
        // Step 4: Increment 'start' pointer
        start++;
        // Step 5: Decrement 'end' pointer
        end--;
    }
}

int main() {
    char myString[] = "education";
    printf("Original string: %s\n", myString);

    reverseStringPointers(myString);
    printf("Reversed string: %s\n", myString);

    return 0;
}