how to use enum in c code example

Example 1: a enum data type in c

// An example program to demonstrate working 
// of enum in C 
#include<stdio.h> 
  
enum week{Mon, Tue, Wed, Thur, Fri, Sat, Sun}; 
  
int main() 
{ 
    enum week day; 
    day = Wed; 
    printf("%d",day); 
    return 0; 
}  
// OUTPUT
2

Example 2: how to define a enum in c

//enum <name of enumeration> { <possible choices separated by commas> } 
enum type_of_fuel{ Gasolina, Gasoleo, Hibrido, Eletrico};

Example 3: enum c

// Changing default values of enum constants
enum suit {
    club = 0,
    diamonds = 10,
    hearts = 20,
    spades = 3,
};