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"); }

// Your logic here
void run_state_sequence(int start) {
    // Implement using function pointer array
    void(*fp[4])(void)={state_init,state_load,state_execute,state_exit};
    int ar[4]={0,1,2,3};
    while(start!=0){
        int c=ar[0];
        for(int i=0;i<3;i++){
            ar[i]=ar[i+1];
        }
        ar[3]=c;
        start=start-1;
    }
    (*fp[ar[0]])();
    printf("\n");
    (*fp[ar[1]])();
    printf("\n");
    (*fp[ar[2]])();
    printf("\n");
}

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

Solving Approach