{
  "type": "code_options",
  "author": "csdn.net",
  "source": "solution.md",
  "exercise_id": "ad89713d26b348c6ab72d1b227cb5a8b",
  "keywords": "算法初阶,快速排序,快速排序的描述,排序和顺序统计量",
  "title": "计算sin(x)",
  "desc": [
    {
      "content": "\n描述\n计算sin(x)=x-x^3/3!+x^5/5!-X^7/7!+......,直到最后一项的绝对值小于10-7时停止计算。其中-2Π<=x<=2Π，^表示次方，如x^3表示x的3次方。\n输入\n一个实数x，-2Π<=x<=2Π\n输出\nsin(x)的值\n输入样例 1 \n3.142\n输出样例 1\n-0.000407347",
      "language": "markdown"
    }
  ],
  "answer": [
    {
      "content": "",
      "language": "cpp"
    }
  ],
  "prepared": [
    [
      {
        "content": "",
        "language": "cpp"
      }
    ],
    [
      {
        "content": "",
        "language": "cpp"
      }
    ],
    [
      {
        "content": "",
        "language": "cpp"
      }
    ]
  ],
  "template": {
    "content": "#include<stdio.h>\n#include<math.h>\ndouble sin(double);\ndouble nResult(double,double);\nint main()\n{\n\tdouble x=0;\n\tscanf(\"%lf\",&x);\n\tprintf(\"sin(%lf)=%lf\\n\",x,sin(x));\n\treturn 0;\n}\ndouble sin(double x)\n{\n\tint i=0;\n\tdouble result=0,n=0;\n\twhile( fabs( n=nResult(x,2*++i-1) ) > 0e-7 )\n\t\tresult+=(i%2==1)?n:-n;\n\treturn result;\n}\ndouble nResult(double x,double n)\n{\n\treturn n==1?x:nResult(x,n-1)*x/n;\n}",
    "language": "cpp"
  },
  "node_id": "dailycode-69ef472d89dd4a86ba769fd50d0ad909",
  "license": "csdn.net",
  "created_at": 1637894158,
  "topic_link": "https://bbs.csdn.net/topics/600470166"
}