Remove trailling zeros from a number in C++

Question

Example of values I am getting

 12.230030
 4.000000
 400.402100
 132.000000
 53.120203
 100.0010
 45.320030

I want this floating values to print like this

12.230030
4
400.4021
132
53.120203
100.001
45.32003

Answer 1

Simply use printf function.

float val=12.02300;
printf("%.8g",val);

Will give correct output. In this case it will output as 12.023
example of other output For value=400.00; it will output 400
For value=32.122300 it will output 32.1223 .