Difference between Struct and Enum in C/C++ with Examples

Structure in C++

A structure is a user-defined data type in C/C++. A structure creates a data type that can be used to group items of possibly different types into a single type. The ‘struct’ keyword is used to create a structure. 

Syntax:

struct structureName{

    member1;

    member2;

    member3;

    .

    .

    .

    memberN;

};

Below is the implementation:

#include<stdio.h>

struct Point
{
int x, y;
};

int main()
{
struct Point p1 = {0, 1};

// Accessing members of point p1
p1.x = 10;
printf ("x = %d, y = %d", p1.x, p1.y);

return 0;
}

x = 10, y = 1

Structures in C++ can contain two types of members:  

• Data Member: These members are normal C++ variables. We can create a structure with variables of different data types in C++.
• Member Functions: These members are normal C++ functions. Along with variables, we can also include functions inside a structure declaration.

Enum in C++

Enum is the short name for enumeration. It is a user-defined data type. It is used to define a list of options that can be selected. Once, enum is declared we cannot change its value, the compiler will throw an error. Two enumerations cannot share the same names.

enum enumName{

    member1;

    member2;

    member3;

    .

    .

    .

    memberN;

};

Below is the implementation:

#include <bits/stdc++.h>
using namespace std;

// Defining enum Year
enum year {
    Jan,
    Feb,
    Mar,
    Apr,
    May,
    Jun,
    Jul,
    Aug,
    Sep,
    Oct,
    Nov,
    Dec
};

// Driver Code
int main()
{
    int i;

    // Traversing the enum year
    for (i = Jan; i <= Dec; i++)
        cout << i << endl;

    return 0;
}

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Difference between Struct and Enum