在CodeRunner中编译时出错

Question

我刚刚开始使用Code Runner，由于某种原因它不会编译我的C程序。

错误如下：

const functions = require('firebase-functions');
const admin = require('firebase-admin');

module.exports = functions.https.onRequest((req, res) => {

    const conversationID = req.query.conversationID;
    const currentUserID = req.query.currentUserID;

    console.log("conversationID", conversationID, "currentUserID", currentUserID);

    const conversationUsersRef = admin.database().ref("chat").child("conversationUsers").child(conversationID);
    conversationUsersRef.once("value").then(conversationUsersRefSnap => {
        var index = 0;
        var totalIndex = 0;
        var conversationUsersImagesArray = [];
        conversationUsersRefSnap.forEach(function(conversationUserSnap) {
            console.log("conversationUserSnap", conversationUserSnap.val());
            console.log("$index", index);
            const dict = conversationUserSnap.val();
            const conversationUserID = dict["userID"];
            if (conversationUserID != currentUserID) {
                index += 1;
                const userSenderImageQuery = admin.database().ref('userImages').child(conversationUserID).child('userProfileImages').orderByChild('timeStamp').limitToLast(1);
                userSenderImageQuery.once('value', function (snapshot, error) {
                    var imagePath = '';
                    if (error) {
                        index -= 1;
                        if (conversationUsersImagesArray.length == index) {
                            console.log("total", conversationUsersImagesArray);
                            res.status(200).send(conversationUsersImagesArray);
                        };
                    } else {
                        if (snapshot.val()) {
                            const value = snapshot.val();
                            const key = Object.keys(value)[0];
                            const requestJSON = value[key];
                            console.log('senderImageQuery requestJSON', requestJSON);
                            const userImagePath = requestJSON['path'];
                            imagePath = userImagePath;
                            const compressPath = requestJSON["compressPath"];
                            if (compressPath) {
                                imagePath = compressPath;
                            };

                            conversationUsersImagesArray.push({"userID" : conversationUserID, "imagePath" : imagePath, "conversationID" : conversationID});
                            console.log("conversationUsersImages", conversationUsersImagesArray.length, "index", index);

                            if (conversationUsersImagesArray.length == index) {
                                console.log("total", conversationUsersImagesArray);
                                res.status(200).send(conversationUsersImagesArray);
                            };
                        } else {
                            index -= 1;
                            if (conversationUsersImagesArray.length == index) {
                                console.log("total", conversationUsersImagesArray);
                                res.status(200).send(conversationUsersImagesArray);
                            };
                        };
                    };
                });
            };
        });
    });
});

的main.c

Undefined symbols for architecture x86_64:
"_rush", referenced from:
  _main in main-f9aa06.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

ftputchar.c

#include <stdio.h>

int ft_putchar(char c);
void rush(int x, int y);

int main(void){
    int x, y;
    scanf("%i", &x);
    scanf("%i", &y);
    rush(x, y);
    return (0);
}

rush.c

#include <unistd.h>

int ft_putchar(char c){
    write(1, &c, 1);
    return (0);
}

  

Code Runner v2.3

然而，当我使用XCode编译并运行代码时，它完全正常。

此外，如果我将所有内容放入 main.c 文件中，则代码会运行并完美编译。