Chữa đề thi hết học phần NMTH ĐH Điện Lực 2012

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Câu 1 : viết bằng C

#include 
#include 

int GT (int a)
{
 if (a< 2)
 {
  return 1;
 }
 else
  return a*GT (a-1);
}

int main ()
{
 int k,m;
 do 
 {
  printf("\nNhap m = ");
  scanf("%d",&m);
  if (m < 1 || m > 10)
  {
   printf("\nGia tri m khong hop le. Xin kiem tra lai !");
  }
 } while (m < 1 || m > 10);

 do 
 {
  printf("\nNhap gia tri cua k = ");
  scanf ("%d",&k);
  if (k < 1 || k> m)
  {
   printf("\nGia tri k khong hop le. Xin kiem tra lai !");
  }
 } while (k < 1 || k >m);
 printf("\nKq cua phep toan %dC%d = %d",m,k,GT(m)/(GT (k)*GT (m-k)));
 getch ();
 return 0;
}

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Câu 1 : Viết bằng C++

#include <iostream>

using namespace std;

int GT (int a)

{

if (a< 2)

{

return 1;

}

else

return a*GT (a-1);

}

int main ()

{

int k,m;

do 

{

cout<<"\nNhap m = ";

cin>>m;

if (m < 1 || m > 10)

{

cout<<"\nGia tri m khong hop le. Xin kiem tra lai !";

}

} while (m < 1 || m > 10);

do 

{

cout<<"\nNhap gia tri cua k = ";

cin>>k;

if (k < 1 || k> m)

{

cout<<"\nGia tri k khong hop le. Xin kiem tra lai !";

}

} while (k < 1 || k >m);

cout<<"\nKq cua phep toan "<<m<<"C"<<k<<" = "<<GT(m)/(GT (k)*GT (m-k));

system ("pause");

return 0;

}

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Câu 2 : viết bằng C

#include <stdio.h>

#include <conio.h>

#define MAX 100

int TinhTong (int a[][100],int dong, int cot)

{

int Tong = 0;

for (int i =0;i < dong;i++)

{

for (int j = 0;j < cot; j++)

{

if (a[i][j] > 0)

Tong+= a[i][j];

}

}

return Tong;

}

main ()

{

//Nhap mang

int a[MAX][MAX];

int dong,cot;

do{

printf ("\nNhap so dong = ");

scanf ("%d",&dong);

if (dong < 0 || dong > MAX)

printf ("\nSo dong khong hop le. Xin kiem tra lai !");

}while (dong < 0 || dong > MAX);

do{

printf ("\nNhap so cot = ");

scanf ("%d",&cot);

if (cot < 0 || cot > MAX)

printf ("\nSo cot khong hop le. Xin kiem tra lai !");

}while (cot < 0 || cot > MAX);

for (int i =0;i < dong;i++)

{

for (int j = 0;j < cot; j++)

{

printf ("\nNhap a[%d][%d] = ",i,j);

scanf ("%d",&a[i][j]);

}

}

//Xuat mang

for (int i =0;i < dong;i++)

{

for (int j = 0;j < cot; j++)

{

printf ("%4d",a[i][j]);

}

printf ("\n");

}

printf ("\nTong cac phan tu duong trong mang = %d",TinhTong (a,dong,cot));

getch ();

return 0;

}

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Câu 2 : viết bằng C++

#include <iostream>

using namespace std;

#define MAX 100

int TinhTong (int a[][100],int dong, int cot)

{

int Tong = 0;

for (int i =0;i < dong;i++)

{

for (int j = 0;j < cot; j++)

{

if (a[i][j] > 0)

Tong+= a[i][j];

}

}

return Tong;

}

main ()

{

//Nhap mang

int a[MAX][MAX];

int dong,cot;

do{

cout<<"\nNhap so dong = ";

cin>>dong;

if (dong < 0 || dong > MAX)

cout<<"\nSo dong khong hop le. Xin kiem tra lai !";

}while (dong < 0 || dong > MAX);

do{

cout<<"\nNhap so cot = ";

cin>>cot;

if (cot < 0 || cot > MAX)

cout<<"\nSo cot khong hop le. Xin kiem tra lai !";

}while (cot < 0 || cot > MAX);

for (int i =0;i < dong;i++)

{

for (int j = 0;j < cot; j++)

{

cout<<"\nNhap a["<<i<<"]["<<j<<"] = ";

cin>>a[i][j];

}

}

//Xuat mang

for (int i =0;i < dong;i++)

{

for (int j = 0;j < cot; j++)

{

cout<<a[i][j]<< "    ";

}

cout<<"\n";

}

cout<<"\nTong cac phan tu duong trong mang = "<<TinhTong (a,dong,cot);

system ("pause");

return 0;

}

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Câu 3 : viết bằng C

#include <stdio.h>

#include <conio.h>

#define MAX 1000

#include <string.h>

typedef struct NhanVien

{

char MaNV[40];

char TenNV[40];

char GT[4];

int NS;

char DV [40];

}NV;

void Nhap (NV &a)

{

printf ("\nNhap Ma nv : "); fflush (stdin);gets (a.MaNV);

printf ("\nNhap Ho Ten nv :  ");fflush (stdin);gets (a.TenNV);

printf ("\nNhap gioi tinh nv  : ");fflush (stdin);gets (a.GT);

printf ("\nNhap nam sinh cua nhan vien : ");scanf ("%d",&a.NS);

printf ("\nNhap don vi cu nhan vien : ");fflush (stdin);gets (a.DV);

printf ("\n----------------");

}

void Xuat (NV a)

{

printf ("\nMa nv : "); fflush (stdin);puts (a.MaNV);

printf ("\nHo Ten nv :  ");fflush (stdin);puts (a.TenNV);

printf ("\\Gioi tinh nv  : ");fflush (stdin);puts (a.GT);

printf ("\nNam sinh cua nhan vien : ");printf ("%d",a.NS);

printf ("\nDon vi cu nhan vien : ");fflush (stdin);puts (a.DV);

printf("\n----------------");

}

void Nhap2 (NV a[], int &n)

{

for (int i = 0; i <n; i++)

{

printf("\nThong tin NV thu  %d",i+1);

Nhap(a[i]);

}

}

void Xuat2 (NV a[], int n)

{

for (int i = 0; i <n; i++)

{

Xuat(a[i]);

}

}

void TimKiem (NV a[], int n)

{

for (int i =0; i<n ;i++)

{

if (strcmp(a[i].DV ,"KHCB") == 0)

Xuat (a[i]);

}

}

main ()

{

NV a[MAX];

int n;

do

{

printf("\nNhap so luong NV : ");

scanf ("%d",&n);

if (n < 0 || n > MAX)

printf("\nXin nhap lai !");

}while (n < 0 || n > MAX);

//1//

Nhap2 (a,n);

//2//

printf ("\nDanh sach nv cua don vi \"KHCB\" la \n");

TimKiem (a,n);

//3//

printf ("\nDanh sach NV da nhap la : \n");

Xuat2 (a,n);

getch ();

}

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Câu 3 : viết bằng C++

#include <iostream>

using namespace std;
#define MAX 1000
#include <string.h>
typedef struct NhanVien
{
char MaNV[40];
char TenNV[40];
char GT[4];
int NS;
char DV [40];
}NV;

void Nhap (NV &a)
{
cout<<"\nNhap Ma nv : "; fflush (stdin);gets (a.MaNV);
cout<<"\nNhap Ho Ten nv :  ";fflush (stdin);gets (a.TenNV);
cout<<"\nNhap gioi tinh nv  : ";fflush (stdin);gets (a.GT);
cout<<"\nNhap nam sinh cua nhan vien : ";cin>>a.NS;
cout<<"\nNhap don vi cu nhan vien : ";fflush (stdin);gets (a.DV);
cout<<"\n----------------";
}
void Xuat (NV a)
{
cout<<"\nMa nv : "; fflush (stdin);puts (a.MaNV);
cout<<"\nHo Ten nv :  ";fflush (stdin);puts (a.TenNV);
cout<<"\\Gioi tinh nv  : ";fflush (stdin);puts (a.GT);
cout<<"\nNam sinh cua nhan vien : ";cout<<a.NS;
cout<<"\nDon vi cu nhan vien : ";fflush (stdin);puts (a.DV);
cout<<"\n----------------";
}
void Nhap2 (NV a[], int &n)
{
for (int i = 0; i <n; i++)
{
cout<<"\nThong tin NV thu  "<<i+1;
Nhap(a[i]);
}
}
void Xuat2 (NV a[], int n)
{
for (int i = 0; i <n; i++)
{
Xuat(a[i]);
}
}

void TimKiem (NV a[], int n)
{


for (int i =0; i<n ;i++)
{
if (strcmp(a[i].DV ,"KHCB") == 0)
Xuat (a[i]);
}

}



main ()
{
NV a[MAX];
int n;
do
{
cout<<"\nNhap so luong NV : ";
cin>>n;
if (n < 0 || n > MAX)
cout<<"\nXin nhap lai !";
}while (n < 0 || n > MAX);

//1//
Nhap2 (a,n);


//2//
cout<<"\nDanh sach nv cua don vi \"KHCB\" la :\n";
TimKiem (a,n);

//3//
cout<<"\nDanh sach NV da nhap la : \n";
Xuat2 (a,n);
system ("pause");

}