exponential to numbers

Question

how to convert "1e+018" to "1000000000000000000"
in c++

Answer 1

You input 1e+18 on console right, and save it to a float?

Use cout.setf(ios::fixed) command to set the decimal display mode to fixed notation and print the 0s as it is...

Answer 2

I don't really know c++ but I found this in < 30 seconds on Google. Maybe this is what you're looking for.

https://stackoverflow.com/questions/9411118/convert-scientific-notation-to-decimal-in-c