Question

1)define variables.

2)define functions.

3)define data structure.

Answer 1

Variable:

A variable is a name given to a memory location in which we can store data. A data type is associated with a variable. In programming languages like C, we have to declare a variable by specifying its data type, and then it can hold only that particular type of data.

Eg: int a;
a is a variable of type int. a=10, assigns the value 10 to variable, a.

Function:

A function is a group of statements, that togerther performs a task. It enables code reusability. We can execute the same set of code again and again by calling the function using function name.

Eg: In C,

void printSum(int a, in b){
int sum = a + b;
printf("%d", sum);
}

The function printSum() accepts two integers a, and b and prints its sum.

Data Structure:

A data structure is a way of organizing and storing data in memory in such a way that we can retrieve and perform operations on that stored data effectively.

For Eg, Structure is a data structure in C,

struct student{
int id;
char name[10];
int mark;
};

The above structure students helps to bind the name, id and mark of a student together, store it, and also to perform operations on the data effectively.

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