State Machine Using Function Pointers

Code

#include <stdio.h>

void state_init()    { printf("Init\n"); }
void state_load()    { printf("Load\n"); }
void state_execute() { printf("Execute\n"); }
void state_exit()    { printf("Exit\n"); }

typedef enum 
{
    STATE1 = 0 ,
    STATE2,
    STATE3,
    STATE4
}e_states;

e_states states_u = STATE1;

void (*fun)();

// Your logic here
void run_state_sequence(int start) 
{
    int count = 0;
    states_u = e_states(start);
    while (count < 3)
    {
switch (states_u)
{

  case STATE1 :
  fun = &state_init;
  fun();
  count++;
  states_u = STATE2;
  break;

  case STATE2:
  fun = &state_load;
  fun();
  count++;
  states_u = STATE3;
  break;

  case STATE3:
  fun = &state_execute;
  fun();
  count++;
  states_u = STATE4;
  break;

  case STATE4:
  fun = &state_exit;
  fun();
  count++;
  states_u = STATE1;
  break;
  
}


    }



}
int main() {
    int start;
    scanf("%d", &start);
    run_state_sequence(start);
    return 0;
}

Solving Approach