Question

我是C ++语言的新手，我正在尝试创建一个程序，它将输出sin，cos和tangent的所有值。该表假设在使用for循环时以10为增量执行值0到360。我一直在我的for循环中得到非停止错误，并且想知道是否有人能告诉我我做错了什么。任何和所有建议都表示赞赏。

#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main()
{
double x, r;
double sin(x), cos(x), tan(x);
double PI = 3.1415926;

for (x = 0:10:360)
 r= x * PI /180.0;
 cout << "The sin of:" << x << "is:" <<sin(r) << "\n" << endl;
 cout << "The cos of:" << x << "is:" <<cos(r) << "\n" << endl;
 cout << "The tan of:" << x << "is:" <<sin(r)/cos(r) << "\n" << endl;

 return 0;



}

Answer 1

您的for循环语法错误，并且您缺少一些大括号 - 请尝试：

for (x = 0.0; x < 360.0; x += 10.0)
{
    r = x * PI / 180.0;
    cout << "The sin of: " << x << " is: " << sin(r) << endl;
    cout << "The cos of: " << x << " is: " << cos(r) << endl;
    cout << "The tan of: " << x << " is: " << tan(r) << endl;
}

创建sin cos和tangent值的C ++程序

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