a=0.7 resolves to a<0.7?

[dheeraj agrawal]

I declared a=0.7,but when I checked with if else it goes to statement a<0.7,why?

[weaknessforcats]

You don't post your if/else statement.

I suspect you are running into rounding.

You should compare your floating point numbers +/- using an allowable precision:

if ( (a - .000001) < 0.7)
etc...

[donbock]

Read what every computer scientist should know about floating-point arithmetic.

By the way, a better way to compare floating-point numbers for equality within a precision threshold is more like this:

if (fabs(variable - desiredValue) < threshold)
...

Refer to C FAQ 14.5 for the best way to do it.