编程输入实数x，计算下面函数的值，并输出y值。

Answer 1

#include <iostream>

using namespace std;

double fun(double x)
{
if (x < 1.0)
{
cout << "y = x * x" << endl;
return(x * x);
}
else if (x > 10)
{
cout << "y = x / 5" << endl;
return(x / 5);
}
else if ((1 <= x) && (x <= 10))
{
cout << "y = 3 * x - 1" << endl;
return(3 * x - 1);
}

cout << "输入的x有误!" << endl;
}

int main(int argc, char* argv[])
{
double x = 0.0;

while (1)
{
cout << "请输入x:";
cin >> x;
cout << "x = " << x << "时,y = " << fun(x) << "\n\n";
}

return(0);
}

Answer 2

什么样的函数????是用C写还是VB 写呢???希望继续说明!!

Answer 3

函数在哪里啊？没看到