Question

How to use typedef to declare and use enum in C

Answer 1

#include <stdio.h>

typedef enum 
{ 
   Zero,
   One, 
   Two, 
} numbers;

int main(void)
{
    numbers n = One;
    
    printf("n = %d\n", n);
        
    return 0;
}

   
/*
run:
 
n = 1

*/

 

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Answer 2

#include <stdio.h>

enum numbers
{ 
   Zero,
   One, 
   Two, 
};

typedef enum numbers numbers;

int main(void)
{
    numbers n = One;
    
    printf("n = %d\n", n);
        
    return 0;
}

   
/*
run:
 
n = 1

*/

 

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Answer 3

#include <stdio.h>

enum numbers
{ 
   Zero,
   One, 
   Two, 
};

typedef enum numbers numbers;

int main(void)
{
    numbers n = One;
    
    if (n == Zero)
    {
        puts("Zero");
    }
    else if (n == One)
    {
        puts("One");    
    }
    else if (n == Two)
    {
        puts("Two");
    }
        
    return 0;
}

   
/*
run:
 
One

*/

 

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