| 0,0 → 1,40 |
|---|
| #include <stdio.h> |
| #include <math.h> |
| |
| int main (void) |
| { |
| int a,b,c,d=0; |
| printf("program vyresi rovnici ve tvaru Ax^2 + Bx + C = 0"); |
| // zadej hodnoty |
| printf("\n Zadej hodnotu A= "); |
| scanf("%d",&a); |
| printf("\n Zadej hodnotu B= "); |
| scanf("%d",&b); |
| printf("\n Zadej hodnotu C= "); |
| scanf("%d",&c); |
| |
| if(a==0) |
| { |
| if(b==0) printf("rovnice nema reseni."); // rovnice je neresitelna |
| else printf("X=%f",-(float)c/b ); // jedna se o linearni rovnici |
| } |
| else |
| { // rovnice ma reseni |
| d=((b*b)-(4*a*c)); |
| printf("\n discriminant rovnice D=%d",d); |
| |
| if (d>0) |
| { |
| printf("\n rovnice ma reseni X1=%f X2=%f",( ((float)-b)+sqrt(d))/2*a,((float)-b)-sqrt(d))/2*a; |
| } |
| if (d==0) |
| { |
| printf("\n rovnice ma jeden koren X=%f",(((float)-b)/2*a)); |
| } |
| if (d<0) |
| { |
| printf("\n reseni rovnice lezi v rovine komplexnich cisel."); |
| printf("\n X1=%f X2=%f"); |
| } |
| } |
| } |