#include<stdio.h>
int main(){
    char arr[3]={1,2,3},temp;
    int start=0,end=2;
    while(start<end){
        temp=arr[start];
        arr[start]=arr[end];
        arr[end]=temp;
    }
    printf("Revers: ");
    for(int i=0;i<3;i++){
        printf("%d",arr[i]);
    }
    return 0;
}