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 run_state_sequence(int start) {
void (*state[4])() ={state_init,state_load,state_execute,state_exit};
for(int i=0; i<3 ;i++){
    int index= (start+i) % 4;
    state[index]();
    if(i < 2){
        printf("\n");
    }
}

}

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

Solving Approach