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// vim: ts=4 sw=4 et
#include <stdio.h>
#include <math.h>

int
main(void)
{
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    float a, b, c, d;

    printf("please input a, b and c:\n");
    scanf("%f %f %f", &a, &b, &c);
    d = (b * b) - (4 * a * c);

    if (d < 0) {
        // Both solutions are imaginary numbers.
    	printf("no real solutions\n");
    } else {
        float soln1, soln2;

        soln1 = (-b + sqrt(d))/(2 * a);
        soln2 = (-b - sqrt(d))/(2 * a);
    	printf("solutions: %f and %f\n",
            soln1, soln2);
    }
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    return 0;
}
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