State Machine Using Function Pointers

Code

#include <stdio.h>

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

void (*state[4])(void) = {state_init,state_load,state_execute,state_exit};

void run_state_sequence(int start) {
    int init = start, count = 0;
    while(count < 3){
        state[init]();
        fprintf(stdout,"\n");
        count++;
        init++;
        init%=4; 
    }
}

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

Solving Approach