Lista 6 - Exercício 9

#include <stdio.h>
#include <math.h>
#define MAXEQ 50


typedef struct equation {
    float secondDegree,firstDegree,noDegree;
}equation;


int main() {

    int i,currentSize = 0;
    float delta,fRoot,sRoot;
    char c;
    struct equation Equations[MAXEQ];

    while(1) {
        printf("Entre com o coeficiente de segundo grau da equacao :\n");
        scanf("%f",&Equations[currentSize].secondDegree);
        printf("Entre com o coeficiente de primeiro grau da equacao :\n");
        scanf("%f",&Equations[currentSize].firstDegree);
        printf("Entre com o elemento independente da equacao:\n");
        scanf("%f",&Equations[currentSize].noDegree);
        currentSize++;

        fflush(stdin);
        printf("Deseja inserir mais equacoes? (S/N)\n");
        if (c = getchar() == 'S')
            continue;
        else
            break;
    }

    for (i = 0; i < currentSize; i++)
    {
        printf("Equacao : %.2fx^2 + %.2fx + %.2f \n",Equations[i].secondDegree,Equations[i].firstDegree,Equations[i].noDegree);
        delta = pow(Equations[i].firstDegree,2) - 4*Equations[i].secondDegree*Equations[i].noDegree;
        if (delta < 0)
            printf("Nao possui raizes reais!\n");
        else {
            fRoot = (-Equations[i].firstDegree + sqrt(delta)) / 2*Equations[i].secondDegree;
            sRoot = (-Equations[i].firstDegree - sqrt(delta)) / 2*Equations[i].secondDegree;
            printf("Raiz 1 = %.2f\nRaiz 2 = %.2f\n",fRoot,sRoot);
        }
    }
    return 0;
}