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printf("program vyresi rovnici ve tvaru Ax^2 + Bx + C = 0"); |
// zadej hodnoty |
printf("\n Zadej hodnotu A= "); |
scanf("%d",&a); |
scanf("%f",&a); |
printf("\n Zadej hodnotu B= "); |
scanf("%d",&b); |
scanf("%f",&b); |
printf("\n Zadej hodnotu C= "); |
scanf("%d",&c); |
scanf("%f",&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 |
if(b==0) printf("rovnice nema reseni v realnych cislech"); // rovnice je neresitelna |
else printf("X=%d",(-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"); |
} |
d=sqrt(b*b-4*a*c); |
printf("discriminant rovnice D=%f",d); |
} |
} |