how to make negative numbers into positive

Question

I am having the negative floating point number as:

a = -0.340515;

to convert this into positive number I used the abs() method as:

Answer 1

You have to use:

abs() for int
fabs() for double
fabsf() for float

Above function will also work but you can also try something like this.

    if(a<0)
    {
         a=-a;
    }