Question

C++ 的问题fatal error C1083: Cannot open include file: 'math': No such file or directory

#include"math"
#include<iostream>
int main()
{
float l,s,d;
cout<<"input l and s";
cin>>l>>s;
d=l*l-16s;
if(d<0)
cout<<"无解！";
else if(d=0)
cout<<"h="<<l/4<<endl<<"w="<<4s/l;
else
cout<<"h1="<<(l+sqrt(d))/4<<"w1="<<4s/(l+sqrt(d))<<endl<<"h2="<<(l-sqrt(d))/4<<"w2="<<4s/(l-sqrt(d));
说答案朋友 请试验一下再说好吗？

Answer 1

应该#include "math.h"

Answer 2

#include<math.h>
#include <iostream>
using namespace std;

int main()
{
float l,s,d;
cout<<"input l and s";
cin>>l>>s;
d=l*l-16*s;
if(d<0)
cout<<"无解！";
else if(d=0)
cout<<"h="<<l/4<<endl<<"w="<<4*s/l;
else
{
cout<<"h1="<<(l+sqrt(d))/4;
cout<<"w1="<<4*s/(l+sqrt(d));
cout<<endl<<"h2="<<(l-sqrt(d))/4;
cout<<"w2="<<4*s/(l-sqrt(d));
}
}

Answer 3

#include <cmath>
即可.
d=l*l-16s; ? 16s ? 不是16*s?

Answer 4

应用math.h或cmath，没有math这个头文件。