why dose "i" have three numbers when it output ?

Question

when I input a number liks 0.00000056 it output 5.6e-007 I can't understand why not 5.6e-7

https://code.sololearn.com/cP0j9X70Ak20/?ref=app

Answer 1

Yui Yuuki I revisited your Code. The Bug is that the first Condition is always true. You can see it, when you change the Line 'cout<<num;' and delete the Line 'cout<<num<<"e"<<i<<endl;'

Answer 2

The Scientific Notation Assignment is a hard Nut for a Beginnner. Some Hints for your Code:

Why do you define num as a Float and not as an Integer?

Your first if-Statement is very complex and redundant

num==0||1<=num<=10||-10<=num<=-1
is the same as
num >=-10 && num <= 10

The Block after this if-Statement will be executed when num is between -10 and 10. So the test in the following else-Block is not necessary:

else{
if(num>=10||num<=-10)

If the previus if-Statement is false, this Condition is always true.