Replace the number

#1

one of my testcases is getting failed
#include
using namespace std;
int main(){
long long int n,s=0,t,i=1;
cin>>n;
while(n!=0){
t=n%10;
if(t==0){
t=5;
}
s=s+ti;
i=i10;
n=n/10;
}
cout<<s;
}

#2

hey @dips123deepali_c25f140838182212 you should also write for the case when the number is 0 and in the while condition it should be n>0.
https://ide.codingblocks.com/s/627889 here i have added that condition to your code is fine

#3

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#4

Thankyou sir for explanation.