1. Given an unsorted array of N integers (N > 0) and an integer value x, write the function that returns zero-based index in the array at which the value x is located. Function should return negative value if array does not contain x. In case that there are multiple occurrences of x within the array, return smallest index at which x occurs. Example: Suppose that array is: 9, 2, 6, 8, 1, 4, 5. For x=6 function returns 2. For x=3, function returns negative value (e.g. -1).

What is the role of "final" or "const" keywords in various programming languages when defining variables or constants?

Why might a programmer decide to use a pointer or reference variable in languages that support them?

Make a table of primary/inbuilt data types in C++ .