61. Event-Based Triggers Using Function Pointer Array

#include <stdio.h>

void on_button() {
    printf("Button Pressed");
}
void on_timer() {
    printf("Timer Expired");
}
void on_uart() {
    printf("UART Received");
}
void on_power() {
    printf("Power On");
}
void on_error() {
    printf("Error Detected");
}

void (*act[])() = {on_button, on_timer, on_uart, on_power, on_error};
void handle_event(int event_code) {
    if (event_code < 0 || event_code > 4) {printf("Unhandled Event"); return;}
    return (act[event_code]());
}

int main() {
    int event;
    scanf("%d", &event);
    handle_event(event);
    return 0;
}