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"); }

void run_state_sequence(int start) {
    if(start < 0 && start > 3)
        return;
        
    void (*pMatrix[4][3])() = {
                               {&state_init, &state_load, &state_execute},
                               {&state_load, &state_execute, &state_exit},
                               {&state_execute, &state_exit, &state_init},
                               {&state_exit, &state_init, &state_load}
    };

    for(int k = 0; k < 3; k++)
    {
        pMatrix[start][k]();
    }
}

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

Solving Approach