I dont understand code please help with code

#1

i dont understand code please help with code can you explain code properly

#2

hi @preetitakhar960_7ecbeb56682325a0
take a string input and iterate replace every 0 with 5, simple

#include<bits/stdc++.h>
using namespace std;
int main() {
	string s;
	cin>>s;
	int n = s.length();
	for(int i=0;i<n;i++){
		if(s[i] == '0')s[i] = '5';
	}
	cout<<s<<endl;
}