Help pls! one testcase not working

[anshul3558_e8c9aa486c392ca3 (anshul tripathi)]

#include
#include<math.h>
using namespace std;

int main() {

long long int n;
cin>>n;

long long int ans=0;
int a=0;

while(n>0){
	int ld=n%10;
	if(ld==0) ld=5;
	ans+=ld*pow(10,a);
	a++;
	n/=10;
}

cout<<ans;


return 0;

}

[talhashamim001 (Talha Shamim)]

@anshul3558_e8c9aa486c392ca3

using namespace std;

int main() {

long long int n;
cin>>n;

long long int ans=0;
int a=0;

while(n>0){
	int ld=n%10;
	if(ld==0) ld=5;
	ans+=ld*pow(10,a);
	a++;
	n/=10;
}

cout<<ans;


return 0;

}

hi @anshul3558_e8c9aa486c392ca3, what if n is 0 ??
handle that case separately

#include <bits/stdc++.h>

using namespace std;

int main() {

long long int n;

cin>>n;

long long int ans=0; //missing

int a=0;

if(n == 0)ans = 5;

while(n>0){

int ld=n%10;

if(ld==0) ld=5;

ans+=ld*pow(10,a);

a++;

n/=10;

}

cout<<ans;

return 0;

}

[talhashamim001 (Talha Shamim)]

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