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感謝您,老師的作文

時(shí)間:2025-10-29 21:44:04 感謝 我要投稿

感謝您,老師的作文

  解: #include

感謝您,老師的作文

  main()

  { float integral(float(8p)(float),float a,float b,int n);

  float a1,b1,a2,b2,a3,b3,c,(*p)(float);

  float fsin(float);

  float fcos(float);

  float fexp(float);

  int n=20;

  printf(“Input a1,b1:”);

  scanf(“%f,%f”,&a1,&b2);

  printf(“Input a2,b2:”);

  scanf(“%f,%f”,&a2,&b2);

  printf(“Input a3,b3:”);

  scanf(“%f,%f”,&a3,b3);

  p=fsin;

  c=integral(p,a1,b1,n);

  printf(“The integral of sin(x) is:%f\n”,c);

  p=fcos;

  c=integral(p,a2,b2,n);

  printf(“The integral of cos(x) is :%f\n”,c);

  c=integral(p,a3,b3,n);

  printf(“The integral of sin(x) is :%f\n”,c);

  }

  float integral(float (*p)(float),float a,float b,int n)

  {

  int i;

  floatx,h,s;

  h=(b-a)/n;

  x=a;

  s=0;

  for(i=1;i<=n;i++)

  {x=x+h;

  s=s+(*p)(x)*h;

  }

  return(s);

  }

  float fsin(float x)

  {return sin(x);}

  float fcos(float x)

  {return cos(x);}

  float fexp(float x)

  {return exp(x);}

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