以下是两个源程序文件：
/* m1.c */                                                        /* m2.c */
         int x=100;                                                        float x;
         int p1(viod);                                                    static main=1;
int main()                                                        int p1()
        {                                                                      {
                x= p1();                                                           int p1=main + (int) x;
                return x;                                                          return p1；
}                                                                      }
对于上述两个源程序文件链接时的符号解析，错误的是（   ）。