练习受挫，萌新求助

[PF909]

具体就是下面这段，返回值始终是0，请各位大佬帮忙看看是哪里有问题，万分感谢！！

const int CM2M = 100;
int main()
{
    using namespace std;
    int CM;
    float M = CM / CM2M + (CM % CM2M) * 0.01f;

    cout << "Enter the height in CM: ";
    cin >> CM;
    cout << "Your in M is " << M << endl;
    return 0;
}

[赵4老师]

const int CM2M = 100;
using namespace std;
int main()
{
    int CM;
    cout << "Enter the height in CM: ";
    cin >> CM;
    float M = 1.0f*CM / CM2M + (CM % CM2M) * 0.01f;
    cout << "Your in M is " << M << endl;
    return 0;
}

[自信男孩]

float M = CM *1.0 / CM2M + (CM % CM2M) * 0.01f;

CM/CM2M，由于这两个变量都是整型，因此CM/CM2M是按照整型数除法计算的，因此结果也是一个整数。CM *1.0/CM2M是将整数除法强制变成浮点数除法。

[白色一大坨]

顺序错了，你还没输入M值就进行了计算：

const int CM2M = 100;
int main()
{
	using namespace std;
	int CM;
	

	cout << "Enter the height in CM: ";
	cin >> CM;

	float M = CM / CM2M + (CM % CM2M) * 0.01f;

	cout << "Your in M is " << M << endl;
	return 0;
}

[千寻港生惠香]

输出值？返回值肯定是0.类型转换再算

[zhouqunhai]

类型转换有问题

[dark9527]

对CM没有初始化。

[PF909]

感谢各位回答，改成这样似乎更合理一些。

const int CM2M = 100;
int main()
{
    using namespace std;
    int CM = 0;
    float M = 0;
    cout << "Enter the height in CM: ";
    cin >> CM;
    M = CM / CM2M + (CM % CM2M) * 0.01f;
    cout << "Your in M is " << M << endl;
    return 0;
}