Programming, Data Structures & Algorithms

A variable is a symbolic name for a memory location in which data can be stored and subsequently recalled. Variables are used for holding data values so that they can be utilized in various computations in a program. All variables have two important attributes: · A type which is established when the variable is defined (e.g., integer, real, character). Once defined, the type of a C++ variable cannot be changed. · A value which can be changed by assigning a new value to the variable. The kind of values a variable can assume depends on its type. For example, an integer variable can only take integer values (e.g., 2, 100, -12).

In the following program you can find maximum value of an array: #include <iostream> using namespace std; int min(int*, int); int main() {     int array[]={66,44,88,11,77,33,99,55,22};     cout<< "min(array,9)=" << min(array,9); } int min(int* array, int n) {     int m=array[0];     for(int i=1;i<n;i++)     if (array[i]>m) m=array[i];     return m; }

Properties of Static variable are given bellow: A. Stored in data segment. B. Has initial default value zero. C. Known within the function on layer it is declared. D. It can only as the program lives after it is declared

Properties of Local variable are given bellow : A. Stored in stuck segment. B. Has initial default garbage value. C. Lives as long as the function or layer lives (life). D. Only known within the function or layer it is declared.

Properties of Global variable are given bellow: A. Store in data segment. B. Has initial default value zero. C. Known throw the program of then determine (scope). D. Lives as long as the program lives (life).

There are four typesof variable according to storage class 1. Global variable(external) 2. Local variable(automatic) 3. Static variable 4. Register variable