Question

Use C to Write a program that takes the array reverse_me and reverses the order of the elements (i.e., the first element and the last element are swapped, the second element and the second-to-last element are swapped, etc.). Store the reversed array in reversed_arr. Finally, print out the reversed array as a string.

Answer 1

C PROGRAM

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

// implement reverse_me() function with two arguments
// first argument pointer with character variable str
// second argument integer n for size of str
void reverse_me(char *str,int n)
{
   int i; // declare integer variable i
   char temp; // declare character variable temp
  
   for(i=0;i<n/2;i++) // create for loop until n/2 times
{
   // swapping of characters
       temp=str[i];
       str[i]=str[n-i-1];
       str[n-i-1]=temp;
      
   }
  
}

int main()
{
   char *s; // declare pointer with character variable s
   int n; // declare integer variable n
   // dynamic memory allocation of pointer s variable
   s=(char *)malloc(sizeof(char));
   printf("Enter a String: ");
   scanf("%s",s); // read string
   n=strlen(s); // calculate lenght of s string
   reverse_me(s,n); // calling reverse_me() function
   printf("Reverse String: %s",s); // display reverse string
  
}

OUTPUT-1

Enter a String: cprogramming
Reverse String: gnimmargorpc

OUTPUT-2

Enter a String: JavaProgramming
Reverse String: gnimmargorPavaJ