How do you determine if two primitives are equal in computer programming?

Answer 1

All programming languages provide 6 built-in comparison operators:

< less than

<= less than or equal

== equal (denoted = in some languages)

!= not equal (denoted <> in some languages)

> greater than

>= greater than or equal

In C Programming, to compare any two primitive data types (X and Y) for equality, we would use the equality operator as per the following expression:

X==Y

This expression evaluates true whenever X and Y hold the same logical value, otherwise it evaluates false. We can use this expression within any statement where the expression true or false would be expected. For example:

if (X==Y) {

// do something when X and Y are equal (where X==Y evaluates true)

} else {

// do something when X and Y are not equal (where X==Y evaluates false)

}

Note that the built-in == operator can also be applied to any combination of primitive data types that can be implicitly promoted or converted to a common type. For example, comparing an int with a double will implicitly convert the int to a double, thus we are actually comparing two doubles, as per the following "named operator":

bool is_equal (int X, double Y) {

return X==Y; // implicitly the same as: return (double) X==Y;

}