Wednesday, December 2, 2009

tugas komputer pemrograman "diskriminan"



#include
#include
void main ()
{
float a, b, c, D, x1, x2;
printf ("*****====================================================*****\n");
printf ("***** RUMUS UNTUK MENENTUKAN AKAR-AKAR PERSAMAAN KUADRAT *****\n");
printf ("***** *****\n");
printf ("***** oleh *****\n");
printf ("***** ERIK PERMANA *****\n");
printf ("***** NIM: 08301011 *****\n");
printf ("***** *****\n");
printf ("***** PROGRAM STUDI TEKNIK ELEKTRONIKA *****\n");
printf ("***** JURUSAN TEKNIK ELEKTRO *****\n");
printf ("***** POLBAN *****\n");
printf ("***** 2009 *****\n");
printf ("*****====================================================*****\n");
printf ("masukkan nilai A\n"); printf ("a=");
scanf ("%f",&a);

printf ("masukkan nilai B\n"); printf ("b=");
scanf ("%f",&b);

printf ("masukkan nilai C\n"); printf ("c=");
scanf ("%f",&c);

D = (b*b)- (4*a*c);
printf ("diskriminannya adalah D=%.2f\n", D);

if (D<0)
{
printf ("akar-akarnya imajiner\n");
}
else if(D==0)
{
x2= (-b)/(2*a);
printf ("akar-akarnya kembar x1=x2= %.2f\n", x2);
}
else
{
x1 = (-b+sqrt(D))/(2*a);
x2 = (-b-sqrt(D))/(2*a);
printf ("akar-akarnya real dan berbeda x1= %.2f dan x2= %.2f\n",x1, x2);
}
}

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