这段代码报错 [Error] expected unqualified-id before '{' token
把void BM(double a,double b,double epsl,double eps2);的分号去掉也没用出现两个新错误
C:\Users\Administrator\Documents\未命名4.cpp In function 'void BM(double, double, double, double)':
C:\Users\Administrator\Documents\未命名4.cpp [Error] 'eps1' was not declared in this scope
有没有大神知道的，求解答
#include<stdio.h>
#include<math.h>
#define N 10000
double A,B,C;
double f(double x)
{
return(A*x*x*x*x+B*x*x+C);
}
void BM(double a,double b,double epsl,double eps2);{
int k;
double x,xe;
double valuea=f(a);
double valueb=f(b);
if(valuea>0 && valueb>0|| valuea<0 && valueb <0) return;
printf("Finding root in the range:[%.31f,%.31f]\n",a,b);
for(k=1;k<=N;k++){
x=(a+b)/2;
xe=(b-a)/2;
if(fabs(xe)<eps2 || fabs(f(x))<eps1){
printf("The x value is:%g\n",x);
printf("f(x)=%g\n\n",f(x));
return;
}
if(f(a)*f(x)<0) b=x;
else a=x;
}
printf("No convergence!\n");
}
int main()
{
double a, b,eps1,eps2,step,start;
printf("Please input A,B,C:\n");
scanf("%1f %1f %1f",&A,&B,&C);
printf("Please input a,b,step,eps1,eps2:\n");
scanf("%1f %1f %1f %1f %1f %1f",&a,&b,&step,&eps1,&eps2);
for(start=a;(start+step)<=b;start+=step)
{
double left=start;
double right=start+step;
BM(left,right,eps1,eps2);
}
return 0;
}
感谢，解决了