MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The ampersand symbol is the recommended concatenation operator. It is used to bind a number of string variables together, creating one string from two or more individual strings.

Detailed explanation-2: -|| (Concatenation) operator Concatenates two expressions on either side of the || symbol and returns the concatenated expression.

Detailed explanation-3: -The concatenation operator ( || ) has an associated operator function called CONCAT. The CONCAT function cannot be overloaded. When you define a text-based UDT, you can define a CONCAT function to concatenate objects of that user-defined data type.

Detailed explanation-4: -Concatenation is the process of appending one string to the end of another string. You concatenate strings by using the + operator. For string literals and string constants, concatenation occurs at compile time; no run-time concatenation occurs. For string variables, concatenation occurs only at run time.

Detailed explanation-5: -4 The Concatenation Operator. The one remaining operator that can be applied to one-dimensional arrays is the concatenation operator (“&”), which joins two array values end to end. For example, when applied to bit vectors, it produces a new bit vector with length equal to the sum of the lengths of the two operands.