Long input

Question

#include <iostream>
using namespace std;
int main() {
unsigned long long int c;
cin>>c;
while(c>=10){
c/=10;
}
cout<<c;
return 0;
}
If I give input as:
93099339395097728908
It doesn't give the correct output which is 9 why???

Answer 1

Your value might be or is longer than max value allowed by that type , for max value you can check by using,
cout<<ULLONG_MAX;
Also go through the following article,
https://www.google.com/amp/s/www.geeksforgeeks.org/maximum-value-of-unsigned-long-long-int-in-c/amp/

Answer 2

A.S. it does not print the correct output for larger input how can I fix it, use the input I mentioned in the question.

Answer 3

What u want to know this code is working it will c/10 will sperate your last number . Use cout inside loop and print values u will understood how its working
#include <iostream>
using namespace std;
int main() {
unsigned long long int c;
cin>>c;
while(c>=10){
c/=10;
cout<<c<<" ";
}
return 0;
}

Answer 4

HK Lite stores your data in form of strings array after that conver it into int

Answer 5

you can also use auto keywords but it cannot store big integers