if (n!=1) printf("%d x ",i); // đoạn if then else này cho xuống dưới
else printf("%d",i);
n=n/i; // dòng này cho lên trên n=n/i;
if (n!=1) printf("%d x ",i);
else printf("%d",i);
chuỗi số hay mảng số?
cứ học đi, phần chuỗi nó năm ở sau phần mảng đó
có thể code saiCó bác nào thành thạo netbeans ko chỉ cho em với:(
Hôm em có down 1 bài về chạy nhưng nó toàn báo lỗi như thế này:
...
ai biết sửa lỗi chỉ cho em với
#include<conio.h>
#include<stdio.h>
#include<string.h>
struct lop
{
char malop[10];
char tenlop[30];
}l[100];
struct sinhvien
{
char masv[10];
char tensv[30];
char mlop[10];
}sv[100];
struct monhoc
{
char tenmh[30];
int dvht;
}mh[10];
struct diem
{
char tensv[30];
int dvht;
float d_c_c;
float d_g_k;
float d_c_k;
float dtb;
};
int dl,dmh,dsv;
void nhaplop()
{
printf("******NHAP VAO DANH SACH LOP*******\n");
printf("-------------------------\n");
printf("| STT | MALOP | TEN LOP |\n");
printf("-------------------------\n");
int i=1;
while(1)
{
gotoxy(0,i+4);
cprintf("| %d",i);
gotoxy(7,i+4);
cprintf("| ");
fflush(stdin);
gets(l[i].malop);
if(strcmp(l[i].malop,"")==0) break;
gotoxy(15,i+4);
cprintf("| ");
fflush(stdin);
gets(l[i].tenlop);
gotoxy(25,i+4);
cprintf("|");
printf("\n");
i++;
}
dl=i-1;
}
void nhapsv(int x)
{
for(int i=1;i<x;i++)
{printf("nhap sinh vien cho lop %s",l[i]);
int i=1;
printf("*********NHAP VAO DANH SACH SINH VIEN*******\n");
printf("--------------------------------------------\n");
printf("| STT | MASV | TEN SV | TEN LOP|\n");
printf("--------------------------------------------\n");
while(1)
{
gotoxy(0,i+4);
cprintf("| %d",i);
gotoxy(5,i+4);
cprintf("| ");
fflush(stdin);
gets(sv[i].masv);
if(strcmp(sv[i].masv,"")==0) break;
gotoxy(12,i+4);
cprintf("| ");
fflush(stdin);
gets(sv[i].tensv);
gotoxy(34,i+4);
cprintf("| ");
fflush(stdin);
strcpy(sv[i].mlop,l[i].malop);
gotoxy(43,i+4);
cprintf("|");
printf("\n");
i++;
}
dsv=i;
}
}
void nhapmonhoc()
{
printf("******NHAP VAO DANH SACH MON HOC*******\n");
printf("-------------------------\n");
printf("| STT | TEN MON HOC | DVHT |\n");
printf("-------------------------\n");
int i=1;
while(1)
{
gotoxy(0,i+4);
cprintf("| %d",i);
gotoxy(7,i+4);
cprintf("| ");
fflush(stdin);
gets(mh[i].tenmh);
if(strcmp(mh[i].tenmh,"")==0) break;
gotoxy(15,i+4);
cprintf("| ");
fflush(stdin);
scanf("%d",&mh[i].dvht);
gotoxy(25,i+4);
cprintf("|");
printf("\n");
i++;
}
dl=i-1;
}
void nhapdiem()
{
int i=1;
float x;
char lop[10];
printf("Nhap vao lop can nhap diem: ");
scanf("&s",&lop);
clrscr();
printf("*******************NHAP DIEM CHO SINH VIEN**********************\n");
printf("---------------------------------------------------------------------------\n");
printf("|STT| MASV | HO VA TEN | D 10% | D 30% |D 60%(L1)|D60%(L2)| DTB |\n");
printf("---------------------------------------------------------------------------\n");
while(1)
{
cprintf("| %d |",i);
fflush(stdin);
puts(lop.masv);
gotoxy(12,5+i);
cprintf("|");
fflush(stdin);
puts(sv.tensv);
gotoxy(34,5+i);
cprintf("|");
scanf("%f",&x);
sv.diem.d_c_c=x;
gotoxy(42,5+i);
cprintf("|");
scanf("%f",&x);
sv.diem.d_g_k=x;
gotoxy(50,5+i);
cprintf("|");
scanf("%f",&x);
sv.diem.d_c_k=x;
sv.diem.dtb=(sv.diem.d_c_c+sv.diem.d_g_k*3+sv.diem.d_c_k*6)/10;
gotoxy(69,5+i);
cprintf("|");
printf("%0.2f",sv.diem.dtb);
gotoxy(75,5+i);
cprintf("|");
printf("\n");
i++;
}
}
int kiemtraten(int n,char ht[30],struct sinhvien s[50])
{
int kt=0;
printf("\n Nhap vao ten sinh vien can tim ");
fflush(stdin);
gets(ht);
for(int i=0;i<n;i++)
if(strcmp(s[i].masv,ht)!=0)
{ kt=1;
break;
}
return kt;
}
void xoapt(struct sinhvien s[50],int t,int n)
{
for(int i=t;i<n;i++)
s[i]=s[i+1];
n=n-1;
}
//DOAN CHUONG TRINH XU LY TEN
/* HAM NAY TRA VE PHAN TEN CUA CHUOI HO VA TEN*/
char *layten(char s1[])
{
int l,k;
k=0;
l=strlen(s1);
for (int i=l;i>0;i--)
{
if (s1[i]==' ') //xac dinh ten dua vao khoang trong
{
break;
}
}
for (int j=i+1;j<=l;j++)
{
s1[k]=s1[j]; //Lay phan ten
k++;
}
return s1;
}
void sap_xep_ten(int n,struct sinhvien s[50])
{
struct sinhvien tam;
char tam1[50],tam2[50];
for(int i=1;i<n-1;++i)
for(int j=i+1;j<n;++j)
{
strcpy(tam1,s[i].tensv);
strcpy(tam2,s[j].tensv);
if(strcmp(layten(tam1),layten(tam2))>0)
{
tam=s[i];
s[i]=s[j];
s[j]=tam;
}
}
}
int menu()
{
int c;
printf("\n******************** MENU CHUONG TRINH CHINH ******************");
printf("\n\n 1. Nhap them vao danh sach sinh vien");
printf("\n\n 2. In ra noi dung trong file");
printf("\n\n 3. In ra danh sach theo thu tu giam dan DTB");
printf("\n\n 4. In ra danh sach theo sap xep theo ten");
printf("\n\n 5. Tim kiem mot ten bat ky");
printf("\n\n 6. In ra ten cua nguoi co diem cao nhat ");
printf("\n\n 7. Xoa mot ten ra khoi danh sach");
printf("\n\n 8. Danh sach thi lai");
printf("\n\n 9. Ghi danh sach vao file");
printf("\n\n 10.Ghi danh sach thi lai vao file");
printf("\n\n 0. Thoat chuong trinh");
printf("\n\n Ban go so de chon muc");
do
{
c=getch();
}while(c>'10'||c<'0');
return c-'0';
}
/* CHUONG TRINH DIEU KHIEN MENU*/
int dieu_khien(void)
{
clrscr();
int chon;
do
{
chon =menu();
switch(chon)
{
case 1:clrscr();
nhapsv(dl);
break;
case 2:
clrscr();
nhapmonhoc();
break;
case 3:
clrscr();
nhaplop();
break;
// case 4:
// clrscr();
//sap_xep_ten(sv);
// xuat_mang_sv(sv);
// break;
// case 5:clrscr();
// xuat_file_sv1();
// break;
// case 6:
// clrscr();
// timmax(sv);
// break;
// case 7: xoapt(sv,2);
// clrscr();
// n=n+1;
// xuat_mang_sv(sv);
// break;
// case 8:clrscr();
// thilai(sv);
// break;
// case 9: ghi_file();
// clrscr();
// break;
// case 4: ghi_file1();
// clrscr();
// break;
}
}while(chon!=0);
getch();
};
void main()
{
clrscr();
nhaplop();
printf("so lop la %d\n",dl);
nhapsv(dl);
nhapmonhoc();
getch();
}#include<conio.h>
#include<stdio.h>
#include<string.h>
struct monhoc
{
char ten[30];
int dvhp;
float d_c_c;
float d_g_k;
float d_c_k;
float dtb;
} ;
struct sinhvien
{
char msv[10];
char hten[30];
char lop[10];
char khoa[10];
monhoc diem;
} sv[50];
FILE *fpt;
int n;
sinhvien sv1;
/* HAM NHAM VAO DS SINH VIEN, KET THUC KHI MA TRONG*/
void nhapsv()
{
// sinhvien sv1;
int i=1;
fpt=fopen("D:\\s_vien1.txt","a+b");
printf("Nhap vao danh sach sv, Kt khi de trong ma\n");
printf("---------------------------------------------------------------\n");
printf("| STT | MaSV | HO VA TEN | LOP | KHOA |\n");
printf("---------------------------------------------------------------\n");
while(1)
{
printf("| %d | ",i);
gotoxy(8,4+i);
fflush(stdin);
gets(sv1.msv);
if(strcmp(sv1.msv,"")==0) break;
gotoxy(15,4+i);
cprintf("| ");
fflush(stdin);
gets(sv1.hten);
gotoxy(41,4+i);
cprintf("| ");
fflush(stdin);
gets(sv1.lop);
gotoxy(51,4+i);
cprintf("| ");
fflush(stdin);
gets(sv1.khoa);
gotoxy(61,4+i);
cprintf("|");
printf("\n");
i++;
/*ghi du lieu vao file */
fwrite(&sv1,sizeof(sinhvien),1,fpt);
}
printf("---------------------------------------------------------------\n");
n=i;
printf("Danh sach nay co %d sinh vien\n\n",n-1);
fclose(fpt);
}
void monhoc()
{
fpt=fopen("D:\\s_vien1.txt","r+b");
while (1)
{
printf("Nhap vao mon hoc. Bam enter de ket thuc\n");
printf("Nhap vao ten mon hoc: ");
fflush(stdin);
gets(sv1.diem.ten);
if(strcmp(sv1.diem.ten,"")==0) break;
printf("Nhap vao so don vi hoc phan");
scanf("%d",&sv1.diem.dvhp);
fwrite(&sv1,sizeof(sinhvien),1,fpt);
}
fclose(fpt);
}
void nhapdiem()
{
int i=1;
float x;
char lop[10];
fpt=fopen("D:\\s_vien1.txt","r+b");
printf("Nhap vao lop can nhap diem: ");
scanf("%s",&lop);
clrscr();
printf("******************************NHAP DIEM CHO SINH VIEN**********************\n");
printf("Nhap diem cho mon %s (%d don vi hoc trinh )",sv1.diem.ten,sv1.diem.dvhp);
printf("---------------------------------------------------------------------------\n");
printf("|STT| MASV | HO VA TEN | D 10% | D 30% |D 60%(L1)|D60%(L2)| DTB |\n");
printf("---------------------------------------------------------------------------\n");
while(fread(&sv1,sizeof(sinhvien),1,fpt),!feof(fpt))
if(strcmpi(lop,sv1.lop)==0)
{
cprintf("| %d |",i);
fflush(stdin);
puts(sv1.msv);
gotoxy(12,5+i);
cprintf("|");
fflush(stdin);
puts(sv1.hten);
gotoxy(34,5+i);
cprintf("|");
scanf("%f",&x);
sv1.diem.d_c_c=x;
gotoxy(42,5+i);
cprintf("|");
scanf("%f",&x);
sv1.diem.d_g_k=x;
gotoxy(50,5+i);
cprintf("|");
scanf("%f",&x);
sv1.diem.d_c_k=x;
sv1.diem.dtb=(sv1.diem.d_c_c+sv1.diem.d_g_k*3+sv1.diem.d_c_k*6)/10;
gotoxy(69,5+i);
cprintf("|");
printf("%0.2f",sv1.diem.dtb);
gotoxy(75,5+i);
cprintf("|");
printf("\n");
fwrite(&sv1,sizeof(sinhvien),1,fpt);
i++;
}
/* int menu()
{
int c;
printf("\n******************** MENU CHUONG TRINH CHINH ******************");
printf("\n\n 1. Nhap vao danh sach sinh vien");
printf("\n\n 2. In ra noi dung trong file");
printf("\n\n 3. In ra danh sach theo thu tu giam dan DTB");
printf("\n\n 4. In ra danh sach theo sap xep theo ten");
printf("\n\n 5. Tim kiem mot ten bat ky");
printf("\n\n 6. In ra ten cua nguoi co diem cao nhat ");
printf("\n\n 7. Xoa mot ten ra khoi danh sach");
printf("\n\n 8. Danh sach thi lai");
printf("\n\n 9. Ghi danh sach vao file");
printf("\n\n 10.Ghi danh sach thi lai vao file");
printf("\n\n 0. Thoat chuong trinh");
printf("\n\n Ban go so de chon muc");
do
{
c=getch();
}while(c>'10'||c<'0');
return c-'0';
}
/* CHUONG TRINH DIEU KHIEN MENU*/
int dieu_khien(void)
{
clrscr();
int chon;
do
{
chon =menu();
switch(chon)
{
case 1:clrscr();
nhapsinhvien(sv);
break;
case 2:
clrscr();
nhapmonhoc();
break;
case 3:
clrscr();
nhaplop();
break;
// case 4:
// clrscr();
//sap_xep_ten(sv);
// xuat_mang_sv(sv);
// break;
// case 5:clrscr();
// xuat_file_sv1();
// break;
// case 6:
// clrscr();
// timmax(sv);
// break;
// case 7: xoapt(sv,2);
// clrscr();
// n=n+1;
// xuat_mang_sv(sv);
// break;
// case 8:clrscr();
// thilai(sv);
// break;
// case 9: ghi_file();
// clrscr();
// break;
// case 4: ghi_file1();
// clrscr();
// break;*/
}
}while(chon!=0);
getch();
};
}
void main()
{
clrscr();
nhapsv();
monhoc();
clrscr();
nhapdiem();
getch();
}![[Mì Tôm Chanh]](/data/avatars/m/1100/1100545.jpg?1473321991){kind=avatar}
using System;
using System.Collections.Generic;
using System.Text;
namespace Ap_dung_delegate
{
class PHAN_SO
{
//Khai bao bien
private int mTuso;
private int mMauso;
//Khai bao thuoc tinh
public int Tuso
{
get { return mTuso; }
set { mTuso = value; }
}
public int Mauso
{
get { return mMauso; }
set { mMauso = value; }
}
//Xay dung constructor
public PHAN_SO()
{
mTuso = 1;
mMauso = 1;
}
public PHAN_SO(int pTuso, int pMauso)
{
mTuso = pTuso;
mMauso = pMauso;
}
//Ghi de lai phuong thuc ToString
public override string ToString()
{
string kq = Tuso.ToString() + "/" + Mauso.ToString();
return kq;
}
public delegate int TinhHaiPS(int Tuso, int Mauso);
}
}using System;
using System.Collections.Generic;
using System.Text;
namespace Ap_dung_delegate
{
class Program
{
//Xay dung phuong thuc tim uoc so chung lon nhat
public static int USCLN(int a, int b)
{
int usc;
while (a != b)
{
if (a > b)
a -= b;
else
b -= a;
}
usc = a;
return usc;
}
//Xay dung phuong thuc toi gian phan so
public static PHAN_SO Toigian(PHAN_SO ps)
{
PHAN_SO kq = new PHAN_SO();
int usc = USCLN((Math.Abs(ps.Tuso)), (Math.Abs(ps.Mauso)));
kq.Tuso = ps.Tuso / usc;
kq.Mauso = ps.Mauso / usc;
return kq;
}
public static PHAN_SO Cong(PHAN_SO ps1, PHAN_SO ps2)
{
PHAN_SO kq = new PHAN_SO();
kq.Tuso = (ps1.Tuso * ps2.Mauso) - (ps1.Mauso * ps2.Tuso);
kq.Mauso = ps1.Mauso * ps2.Mauso;
return Toigian(kq);
}
//Phuong thuc tru
public PHAN_SO Tru(PHAN_SO ps1, PHAN_SO ps2)
{
PHAN_SO kq = new PHAN_SO();
kq.Tuso = (ps1.Tuso * ps2.Mauso) - (ps1.Mauso * ps2.Tuso);
kq.Mauso = ps1.Mauso * ps2.Mauso;
return Toigian(kq);
}
//Phuong thuc nhan
public PHAN_SO Nhan(PHAN_SO ps1, PHAN_SO ps2)
{
PHAN_SO kq = new PHAN_SO();
kq.Tuso = ps1.Tuso * ps2.Tuso;
kq.Mauso = ps1.Mauso * ps2.Mauso;
return Toigian(kq);
}
//Phuong thuc chia
public PHAN_SO Chia(PHAN_SO ps1, PHAN_SO ps2)
{
PHAN_SO kq = new PHAN_SO();
kq.Tuso = ps1.Tuso * ps2.Mauso;
kq.Mauso = ps1.Mauso * ps2.Tuso;
return Toigian(kq);
}
static void Main(string[] args)
{
Console.WriteLine("Nhap gia tri cua phan so thu nhat");
Console.Write("Tu so: ");
int tu1 = int.Parse(Console.ReadLine());
Console.Write("Mau so: ");
int mau1 = int.Parse(Console.ReadLine());
PHAN_SO ps1 = new PHAN_SO(tu1, mau1);
Console.WriteLine("Nhap gia tri cua phan so thu hai ");
Console.Write("Tu so: ");
int tu2 = int.Parse(Console.ReadLine());
Console.Write("Mau so: ");
int mau2 = int.Parse(Console.ReadLine());
PHAN_SO ps2 = new PHAN_SO(tu2, mau2);
//In phan hung dan chon chuc nang
Console.WriteLine("Xin vui long chon phep toan can thuc hien: ");
Console.WriteLine("1. Tong cua hai phan so");
Console.WriteLine("2. Hieu cua hai phan so");
Console.WriteLine("3. Tich cua hai phan so");
Console.WriteLine("4. Thuong cua hai phan so");
Console.Write("Ban chon so: ");
//Dung switch de kiem tra bien chon
int chon = int.Parse(Console.ReadLine());
PHAN_SO pskq = new PHAN_SO();
switch (chon)
{
case 1:
pskq = [COLOR="Red"]PHAN_SO.TinhHaiPS(Cong)[/COLOR];
Console.WriteLine("Ket qua Cong hai phan so");
Console.WriteLine("Phan so ket qua la: {0}", pskq);
break;
case 2:
pskq = [COLOR="Red"]PHAN_SO.TinhHaiPS(Tru)[/COLOR];
Console.WriteLine("Ket qua Tru hai phan so");
Console.WriteLine("Phan so ket qua la: {0}", pskq);
break;
case 3:
pskq = [COLOR="Red"]PHAN_SO.TinhHaiPS(Nhan)[/COLOR];
Console.WriteLine("Ket qua Nhan hai phan so");
Console.WriteLine("Phan so ket qua la: {0}", pskq);
break;
case 4:
pskq = [COLOR="Red"]PHAN_SO.TinhHaiPS(Chia)[/COLOR];
Console.WriteLine("Ket qua Chia hai phan so");
Console.WriteLine("Phan so ket qua la: {0}", pskq);
break;
}
}
}
}Error 1 'Ap_dung_delegate.PHAN_SO.TinhHaiPS' is a 'type', which is not valid in the given contextví dụ cụ thể được không bạn :(a | b là bitwise operator, trả về giá trị OR bit của a và b, nếu a và b là 2 biểu thức ra true hoặc false thì nó sẽ trả về 0 hoặc 1
còn a || b trả về true hoặc false, với điều kiện a,b cùng kiểu
tìm đọc cái này trong quyển sách mấy trăm trang chắc héo 
