what is the approach to read numbers that don,t fall in predefined data types.
Scan them as strings?? You can also use BigInteger template (This should help…) if you need to perform some arithmetic operations on them? Or better use python 
which type of numbers not come in predefined datatypes
long long int better for larger value
for c language specifically
What do you mean by numbers that don,t fall in predefined data types ?
ranging above long long int
For C… Not sure… I hope you would have given google a try… Or someone else who can help?? @vijju123 ??
IDK, I am feeling its kind of related to an on going contest. So I cant comment.