[C] Solve Quadratic Equations (Ax^2 + Bx + C = 0)

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

int main(void)
{
    float fA, fB, fC, fDelta, fX, fX1, fX2;

    printf("Solve quadratic equations: Axx + Bx + C = 0.\Enter A: ");
    scanf("%f", &fA);
    printf("Enter B: ");
    scanf("%f", &fB);
    printf("Enter C: ");
    scanf("%f", &fC);

    fDelta = fB * fB - 4 * fA * fC;

    if (fDelta > 0) {
        fX1 = (-fB + sqrt(fDelta)) / (2 * a);
        fX2 = (-fB - sqrt(fDelta)) / (2 * a);
        printf("x1 = %.2f.\nx2 = %.2f.\n", fX1, fX2);
    }
    else {
        if (fDelta == 0) {
            fX = (-b) / (2 * a);
            printf("x1 = x2 = %.2f.\n", fX);
        }
        else {
            printf("Has no solution!\n");
        }
    }

    getch();
    return 0;
}