My floating point number has extra digits when I print it

Question

I define a floating point number as float transparency = 0.85f; And in the next line, I pass it to a function -- fcn_name(transparency) -- but it t

Answer 1

The only way I can think of solving this problem is to pass characteristic and mantissa to the function separately and let IT work on setting the values appropriately.

Also if you want more precision,

http://www.drdobbs.com/cpp/fixed-point-arithmetic-types-for-c/184401992 is the article I know. Though this works for C++ only. (Searching for an equivalent C implementation).

I tried this on VS2010,

#include 
void printfloat(float f)
{
    printf("%f",f);
}

int main(int argc, char *argv[])
{
    float f = 0.24f;
    printfloat(f);
    return 0;
}

OUTPUT: 0.240000