Casting and converting between types
You will often need to convert between different types.
Add a new Console Application project named Ch03_CastingConverting.
Casting from numbers to numbers
It is safe to implicitly cast an int variable into a double variable.
In the Main method, enter the following statements:
int a = 10; double b = a; WriteLine(b);
You cannot implicitly cast a double variable into an int variable because it is potentially unsafe and would lose data.
In the Main method, enter the following statements:
double c = 9.8; int d = c; // compiler gives an error for this line WriteLine(d);
Press Ctrl + W, E to view the Error List, as shown in the following screenshot:
You must explicitly cast a double into an int variable using a pair of round brackets around the type you want to cast the double into. The pair of round brackets is the cast operator. Even then you must beware that the part after the decimal point will be trimmed off without warning.
Modify the assignment statement for the...