Event-Based Triggers Using Function Pointer Array

Code

#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");
}

// Write your event dispatcher logic here
void handle_event(int event_code) {
    // Your logic
    void (*arr[5]) (void) = {on_button, on_timer, on_uart, on_power, on_error};

    switch(event_code)
    {
        case 0: 
            arr[0]();
            break;
        case 1: 
            arr[1]();
            break;
        case 2: 
            arr[2]();
            break;
        case 3: 
            arr[3]();
            break;
        case 4: 
            arr[4]();
            break;
        default:
            printf("Unhandled Event");
            break;
    }
}

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

Solving Approach

/*
Plan:
- create an array of the functions
- create a switch case on the event_code
- return the function as per the event code
*/