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

int main()
{
    char tamil[20];
    int temp,start=0,end,num;
    int ori,rev=0,digit;
    fgets(tamil,sizeof(tamil), stdin);
    end=strlen(tamil)-1;
    if(end=0){
        printf("re enter number");
        scanf("%d",&num);
        ori=num;
    while(num!=0){
        digit=num%10;
        reve=reve*10+digit;
        num=num/10;
    }
        
    }
    else{
         while(start<end){
        temp=tamil[start];
        tamil[start]=tamil[end];
        tamil[end]=temp;
        start++;
        end--;
    }
    printf("reveser:%s",tamil);
    
    
}
}