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

int uravnenie(float a, float b, float c, float *px1, float *px2);


void main() {
    int casse;
    float a, b, c, x1, x2;
    printf("Enter a: "); scanf("%f", &a);
    printf("Enter b: "); scanf("%f", &b);
    printf("Enter c: "); scanf("%f", &c);

    casse = uravnenie(a, b, c, &x1, &x2);

    switch(casse){
    case 1:
        printf("\nNo solution"); break;
    case 2:
        printf("\nEvery x"); break;
    case 3:
        printf("\nx = %f", x1); break;
    case 4:
        printf("\nNo actual solutions"); break;
    case 5:
        printf("\nx1 = %f\nx2 = %f", x1, x2); break;
    }
}

int uravnenie(float a, float b, float c, float *px1, float *px2){
    float D;
    if (a == 0){
        if (b == 0){
            if (c == 0) return 2;
            else return 1;
        }
        else {
            *px1 = -c / b;
            return 3;
        }
    }
    else {
        D = b*b - 4*a*c;
        if (D < 0) return 4;
        else {
            *px1 = (-b - sqrt(D)) / (2 * a);
            *px2 = (-b + sqrt(D)) / (2 * a);
            return 5;
        }
    }
}