menghitung Total Pembayaran menggunakan c++

#include "stdio.h"

#include "conio.h"

void main()

{

char kode[20],nama[20];

float jumlah, harga,diskon,harga_diskon;

clrscr();

printf("=======================================\n");

printf("\n Kode Barang : ");

scanf("%s",&kode);

printf("\n Nama Barang : ");

scanf("%s",&nama);

printf("\n Harga : Rp ");

scanf("%f",&harga);

printf("\n Jumlah : ");

scanf("%f",&jumlah);

diskon=0.2*harga;

harga_diskon=harga-diskon;

printf("=======================================\n");

printf(" Kode Barang  = %s\n",kode);

printf(" Nama Barang  = %s\n",nama);

printf(" Harga  = Rp %.2f\n",harga);

printf(" Diskon  = 20\%\n");

printf(" Jumlah  = %.0f\n",jumlah);

printf(" Jumlah harga = Rp %.2f\n",harga_diskon*jumlah);

printf("=======================================\n");

getch();

}