/计算数值积分（函数指针作为函数参数示例/

最新推荐文章于 2021-12-03 16:22:21 发布

超翔之逸

最新推荐文章于 2021-12-03 16:22:21 发布

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分类专栏：妙趣编程文章标签：算法 leetcode 程序人生

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#include<stdio.h>
#include<math.h>
double calc(double(*funp)(double),double a,double b);
double f1(double x),f2(double x);
int main()
{
    double result;
    double(*funp)(double);

    result=calc(f1,0.0,1.0);
    printf("1:result=%.4f\n",result);
    funp=f2;
    result=calc(funp,1.0,2.0);
    printf("2:result=%.4f\n",result);
    return 0;
}
double calc(double(*funp)(double),double a,double b)
{
    double z;
    z=(b-a)/2*((*funp)(a)+(*funp)(b));
    return (z);
  }  
   double f1(double x)
    {
        return(x*x);
    }
    double f2(double x)
    {
        return(sin(x)/x);
    }