Problems
Number of n - digit integers
include <iostream>
include <cmath>
using namespace std; int main() { int n; cin>>n; string s="9"; for(int i=1;i<n;i++) { s+='0'; } cout<<s; }
using namespace std; int main() { int n; cin>>n; string s="9"; for(int i=1;i<n;i++) { s+='0'; } cout<<s; }