Type Casts in C C++

You can force an expression to be of a specific type by using a cast. The general form of
a cast is
(type) expression
where type is a valid data type. For example, to make sure that the expression x/2
evaluates to type float, write
(float) x/2

Casts are technically operators. As an operator, a cast is unary and has the same
precedence as any other unary operator.
Although casts are not usually used a great deal in programming, they can be very
useful when needed. For example, suppose you wish to use an integer for loop control,
yet to perform computation on it requires a fractional part, as in the following
program:
#include <stdio.h>
int main(void) /* print i and i/2 with fractions */
{
int i;
for(i=1; i<=100; ++i)
printf("%d / 2 is: %f\n", i, (float) i /2);
return 0;
}
Without the cast (float), only an integer division would have been performed. The cast
ensures that the fractional part of the answer is displayed.