02_C++的main函数.ipynb

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   "source": [
    "# C++的main函数"
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   "source": [
    "# 1. main函数"
   ]
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   "source": [
    "① main函数是一个程序的入口\n",
    "\n",
    "② 每个程序都必须有这么一个函数，并且有且只有一个。"
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   "source": [
    "//下面11行代码的含义就是在屏幕中输出一个 Hello World\n",
    "\n",
    "#include<iostream>\n",
    "using namespace std;\n",
    "\n",
    "int main() {\n",
    "\n",
    "    cout << \"hello C++\" << endl;  //屏幕显示“hello C++”\n",
    "    system(\"pause\");              //按任意键继续，退出程序\n",
    "\n",
    "    return 0;\n",
    "\n",
    "}"
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   "source": [
    "运行结果：  \n",
    " - hello C++  \n",
    " - 请按任意键继续. . ."
   ]
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