Question about C

Question

Why do we do :

Average =(float) a+b;

Why not this :

Float average = a+b ???

Answer 1

Average is a new variable and a is another variable.if you declare Average as float datatype a also have to be of float datatype so we do conversion .

Answer 2

Ohhhh so you mean , a and b needs to be float not string or char ?

Answer 3

All three variables must be in the some datatype .Here you do an addition so you can not do addition with different variables datatype so you can not added a float to string or float to integer You will store the addition result as float not as string or integer this will produce a type error