Integer and Float conversion

In order to effectively develop C program, it will be necessary to
understand the rules that are used for the implicit conversion of
floating point and integer values in C. These are mentioned below.
Note them carefully:

1. An arithmetic operation between an integer and integer
   always yields an integer result.
2. An operation between a real and real always yields a real
   result.
3. An operation between an integer and real always yields a real
   result. In this operation the integer is first promoted to real
   and then the operation is performed. Hence the result is real.

I think a few practical examples shown below would put the
issue beyond doubt.




Operation	Result
5 / 2	2
5.0 / 2	2.500000
5 / 2.0	2.500000
5.0 / 2.0	2.500000
2 / 5	0
2.0 / 5	0.400000
2 / 5.0	0.400000
2.0 / 5.0	0.400000