1027 方程组的根

// Test1027-求方程的根.cpp: 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <math.h>
int mark = 0;
float haha(int a, int b, int c)
{
    float temp = b * b - 4 * a*c;
    if (temp < 0)
    {
        temp = -temp;
        mark = 1;
    }
    else
    {
        mark = 0;
    }
    return sqrt(temp);
}

int main()
{
    int a, b, c;
    float result1,result2;
    scanf_s("%d %d %d", &a,&b,&c);
    float h1, h2;
    h1 = -(float)b / (float)(2 * a);
    float h3 = haha(a, b, c)/(2*a);

    if (mark == 0)
    {
        h1 = h1 + h3;
        h2 = h1 - h3;

        printf("x1=%.3f x2=%.3f", h1, h2);
    }
    else if (mark == 1)
    {
        printf("x1=%.3f+%.3fi ", h1, h3);
        printf("x2=%.3f-%.3fi ", h1, h3);
    }

    //printf("%.3f", result);
    return 0;
}