C++强制数据类型包含范围的探讨

用于对变量的理解

float强制类型转化，两个变量其中一个就可以得到float的效果
但是如果是这样

实现的就是float无效。

#include 
using namespace std;

const int DEGREE_TO_MINUTE = 60;
const int MINUTE_TO_SECOND = 60;


int main()
{
    int degree, minute, second;
    float degree_style;
    
    cout<<"Enter a latitude in degrees, minutes, and seconds:"<>degree;
    cout<<"Next, enter the minutes of arc:";
    cin>>minute;
    cout<<"Finally, enter the seconds of arc:";
    cin>>second;
    
    degree_style = degree + minute / float(DEGREE_TO_MINUTE) +
                        second/float(MINUTE_TO_SECOND * DEGREE_TO_MINUTE);
    // degree_style = degree + float(minute) / DEGREE_TO_MINUTE +
    //                float(second)/(MINUTE_TO_SECOND * DEGREE_TO_MINUTE);
    
    cout<