Error: invalid operands of types 'float' and 'int' to binary 'operator^'

Question

我收到错误 invalid operands of types 'float' and 'int' to binary 'operator^' 我不知道如何修复它

错误发生在函数f，在最后一行

非常感谢任何帮助

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>


using namespace std;
float f(float x);

int main()
{

    float a;
    float b;
    int n;
    float h;
    float x;
    float area;

    cout << "Please input the first limit: ";
    cin >> a;
    cout << "Please input the second limit: ";
    cin >> b;
    cout << "How many rectangles do you want to use? ";
    cin >> n;

    h = (b-a)/n;

    area = (f(a)+f(b))/2;

    for (int i=1;i<n;i++) {
        area += f(a+i*h);
    }

    area = area*h;
    cout << "The area under the curve of f(x) = (2/sqrt(3.14))(exp(-x^2)) is ";
    cout << area;
}

float f(float x){
     return (exp(-x^2))(2/sqrt(3.14));
}

Answer 1

x 具有数据类型 float。您已对其应用逻辑 XOR 运算符。 XOR 需要整数操作数。

不过，我怀疑您正在寻找指数。 C++ 没有指数运算符。相反，尝试这样的事情：

float f(float x){
     return (exp(-(x*x)))*(2/sqrt(3.14));
}

我假设您的意思是将 exp(-(x*x)) 乘以 (2/sqrt(3.14)，但我在那里没有看到乘法运算符。

Error: invalid operands of types 'float' and 'int' to binary 'operator^'

Error: invalid operands of types 'float' and 'int' to binary 'operator^'

c++

operands