# Here's an idea for a plugin system for a programming language:

#include <stdio.h>

int run(int (plugin)(int id)) {
    printf("Step 1.\n");
    if (plugin(0)) return 1;
    printf("Step 2.\n");
    if (plugin(1)) return 1;
    printf("Step 3.\n");
    if (plugin(2)) return 1;
    return 0;
}

int plugin(int id) {
    switch (id) {
    case 0: {
        printf("First, dab 'em up.\n");
    } break;
    case 1: {
        printf("Then, hit 'em around.\n");
    } break;
    case 2: {
        printf("Finally, rap da beat.\n");
    } break;
    }
    return 0;
}

int main(void) {
    run(plugin);
    return 0;
}