#include<stdio.h>
#include<stdlib.h>
using namespace std;
 
char *func(char*);
 
int main(){
 
	char* input = "He&uf.jp";
 
	char *out = "";
	out = func(input);
	printf("%s" , out);
 
}
 
#include<bits/stdc++.h>
 
char *func(char* in)
{
	char *out = "";
 
	int len = strlen(in);
	int i = 0;
 
	int j = len - 1;
 
	while(i<j)
	{
		if(!isalpha(in[i]))
			i++;
		if(!isalpha(in[j]))
			j--;
		else {
			swap(in[i] , in[j]);
			i++;
			j--;
		}	
	}
 
	strcpy(out,in);
    return out;
}

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