Print reverse code

#1

PRINT REVERSE
Take N as input, Calculate it’s reverse also Print the reverse.

Constraints:
0 <= N <= 1000000000

Sample Input:
123456789
Sample Output:
987654321
Explanation:
You’ve to calculate the reverse in a number, not just print the reverse.

code
#include
using namespace std;
int main() {

int n,a,reverse=0;
cin >> n;

if((n>=0) &&(n<=1000000000))
{
cout<<“wrong input”;
}

while(n!=0)
{
a=n%10;
reverse=(reverse*10)+a;
n=n/10;
}

cout<<reverse;
}

output on hacker blocks
wrong input0

problem : it is not asking for input from user even if code has it and all the test cases are going wrong

#2

@ekanshi copy your code on ide and share it in this thread