exact representation of floating points in c

Question

void main()
{
    float a = 0.7;

    if (a < 0.7)
        printf(\"c\");
    else
        printf(\"c++\");
} 

In the above question for 0.7, \"

Answer 1

Floating point comparisons are not reliable, whatever you do. You should use threshold tolerant comparison/ epsilon comparison of floating points.

Try IEEE-754 Floating-Point Conversion and see what you get. :)