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"); }

// Your logic here
void run_state_sequence(int start) {
    void (*func_ptr[]) () = {state_init,state_load, state_execute,state_exit };
     int n = 4; // total number of states

    // Execute 3 states in sequence, wrapping around using modulo
    for(int i = 0; i < 3; i++) {
        func_ptr[(start + i) % n]();  // call state function
    }
}

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

Solving Approach