# include <stdio.h>
# include <math.h>

main(void)
{
        int a, b, c;
        double delta, x1, x2;
        printf("请输入a的值：");
        scanf("%d\n", &a);
        printf("你输入的值是：%d \n", a);
        printf("请输入b的值：");
        scanf("%d\n", &b);
        printf("请输入c的值：");
        scanf("%d\n", &c);
        delta = (b*b) - (4*a*c);

        if (delta >0)
        {
                x1 = (-b + sqrt(delta)) / (2*a);
                x2 = (-b - sqrt(delta)) / (2*a);
                printf("该一元二次方程有两个解, x1 = %f, x2 = %f \n", x1, x2);
        
        }
        else if (delta == 0)
        {
                x1 = (-b) / (2*a);
                printf("该一元二次方程有一个唯一解，x1 = %f \n", x1 );
        
        }
        else
        {
                printf("无解\n");
        }


        return 0;
}