C语言程序设计编写程序

#include<iostream>

using namespace std;

int main()
{
    int a,b,c;
    cout << "input data : ";
    cin >> a >> b >> c;
    if((a+b) > c && (a+c) > b && (b+c) > a)
    {
        cout << "能构成三角形" << endl;
        if(a == b && b == c)
        {
            cout << "等边三角形" << endl;
        }
        else if((a == b && b != c)|| (a == c && c != b) || (b == c && c != a))
        {
            cout << "等腰三角形" << endl;
        }
        else
        {
            cout << "一般三角形" << endl;
        }
    }
    else
    {
        cout << "不能构成三角形" << endl;
    }
    return 0;
}