Question 16 (1 point) Multiple Choice, Select One: Which of the following symbols is used to extract the memory address of a variable O & Question 17 (1 point) Multiple Choice, Select One: Which of the following types are valid pointer types, but not valid variable types char void O double O int Question 18 (1 point) Multiple Choice, Select One: An uninitialized pointer in C is always null True False Question 19 (1 point) Multiple Choice, Select One: Which of the following lines of code can be used to access the second element of an int array, A, using pointer arithmetic O "(A+sizeof(int)) O A[1] O "(A+4) O "(A+1) Question 20 (1 point) Multiple Choice, Select One: What type is returned by malloc() O An int pointer A char O A void pointer O A double

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Basic SQL Queries

Structured Query Language is the full form of SQL. It is a high-level language used to communicate with a relational database. It is used for creating, storing and accessing contents of a relational database. SQL is used to write the queries which are executed using database engines like Oracle, SQL Server and so forth.