How to convert fractional numbers from binary to 10 in c++?

Question

Programming

You need to write a code for converting fractional numbers from 2 to 10

Answer 1

You can do so. Create two variables: double x=0, y=0.
Read the line from left to right. If the digit came b=='0' or '1', then execute x=2*x+b-'0'; y*=2;
If a comma came - assign y=1. Finally, if y is non-zero, then divide x by y.
For example,
for line 101 : x=5, y=0. Answer 5.
101.101 : x=45, y=8. Answer 45/8=5.625
101, : x=5, y=1. Answer 5.
,101 : x=5, y=8. The answer is 5/8=0.625.

Answer 2

Floating point/point numbers then.
Here is the IEEE 754 standard for you if you are completely banned in Google.
Convert to binary, and then rotate as you please, even in hex, even in octal with ternary.

Answer 3

Take separately the bits in which the fractional part is stored, separately the integer part. Convert to decimal, add.