57. State Machine Using Function Pointers

#include <stdio.h>

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

// Your logic here
void run_state_sequence(int start) {
    void (*func[4])(void)={state_init, state_load, state_execute, state_exit};
    if (start==0){
        func[0]();printf("\n");
        func[1]();printf("\n");
        func[2]();printf("\n");

    }
    else if (start ==1){
        func[1]();printf("\n");
        func[2]();printf("\n");
        func[3]();printf("\n");

    }
    else if(start==2){
        func[2]();printf("\n");
        func[3]();printf("\n");
        func[0]();printf("\n");

    }
    else{
        func[3]();printf("\n");
        func[0]();printf("\n");
        func[1]();printf("\n");

    }
}

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

 void (*func[4])(void)={a,c,b,b}//remember this
and 

to call: func[1](); () is important