BAI TAP CAU TRUC
#include"iostream"
#include<conio.h>
#include<string.h>
#include<stdio.h>
using namespace std;
typedef struct
{
int MaSo;
char HoTen[30];
float Toan,Ly,Hoa;
float Tong;
}TS;
void NhapTS( TS &t);
void XuatTS(TS t);
void NhapDS (TS a[],int N);
void XuatDSDau (TS a[],int N);
int KT (TS t);
void main()
{
TS a[100];
int N;
cout<<" Nhap vao so luong thi sinh:";
cin>>N;
NhapDS(a,N);
XuatDSDau(a,N);
getch();
}
void NhapTS(TS &t)
{
cout<<"
Nhap ma so:";
cin>>t.MaSo;
cout<<"
Nhap ho ten:";
cin>>t.HoTen;
fflush(stdin);
cout<<"
Nhap diem Toan:";
cin>>t.Toan;
cout<<"
Nhap diem ly:";
cin>>t.Ly;
cout<<"
Nhap diem hoa:";
cin>>t.Hoa;
t.Tong = t.Toan + t.Ly + t.Hoa;
}
void NhapDS(TS a[],int N)
{
for(int i=0;i<N;i++)
{
cout<<"
Nhap thong tin cua thi sinh thu"<<i+1<<":";
NhapTS(a[i]);
}
}
int KT (TS t)
{
if ( t.Tong>=12 && t.Toan>=2 && t.Ly>=2 && t.Hoa>=2)
return 1;
return 0;
}
void XuatTS (TS t)
{
cout<<endl;
cout<<" "<<t.MaSo<<" "<<t.HoTen<<" "<<t.Toan<<" "<<t.Ly<<" "<<t.Hoa<<" "<<t.Tong<<" ";
}
void XuatDSDau( TS a[],int N)
{
cout<<"
Danh sach cac thi sinh thi dau:";
cout<<"
MaSo HoTen Toan Ly Hoa TongDiem";
for(int i=0;i<N;i++)
if(KT(a[i])==1)
XuatTS(a[i]);
}
DEM
#include "iostream"
#include<conio.h>
#include<string.h>
using namespace std;
void main()
{
char s[100];
int dem=0;
cout<<"nhap vao 1 chuoi:";
dem=0;
cout<<"chuoi thanh :";
for(int i=0;i<strlen(s);i++)
{
if(i%2!=0)
{
if(s[i]>=65 && s[i]<=93)
s[i]=s[i]+32;
else
s[i] = s[i];
}
else
{
if(s[i]>=65 && s[i]<=93)
s[i]=s[i];
else
s[i] = s[i]-32;
}
cout<<s[i];
}
dem co bao nhieu phan tu bang x trong mang
#include "iostream"
#include <conio.h>
using namespace std;
int timx(int a[],int N, int x)
{
int kq=0;
for(int i=0;i<N;i++)
{
if(a[i]<x)
{
kq=kq+1;
}
}
return kq;
}
void main ()
{
int a[100],N,x;
cout<<" nhap so phan tu can tim : ";
cin>> N;
for(int i=0;i<N;i++)
{
cout<< " nhap phan tu thu " <<i<<" :" ;
cin>> a[i];
}
cout<< " nhap so x can tim : ";
cin >>x;
int demx=0;
demx=timx(a,N,x);
cout <<" co " <<demx<< " phan tu trong mang nho hon x ";
getch();
}
TACH MANG
#include"iostream"
#include<conio.h>
using namespace std;
void tachmang(int a[],int n,int b[],int &m,int c[],int &l)
{
int k=n/2;
m=l=0;
for( int i=0;i<k;i++)
{
b[m++]=a[i];
c[l++]=a[k+i];
}
cout<<" mang B la : ";
for(int i=0;i<m;i++)
{
cout <<b[i]<<" ";
}
cout << " mang C la : ";
for(int i=0;i<l;i++)
{
cout << c[i]<<" ";
}
}
void main()
{
int a[100],n,b[100],m,c[100],l;
cout <<" nhap so phan tu can su dung :";
cin>> n;
for(int i=0;i<n;i++)
{
cout << " nhap phan tu thu "<< i << " : " ;
cin>>a[i];
}
tachmang(a,n,b,m,c,l);
getch();
}
DEM PHAN TU CHAN LE TRONG MANG
#include"iostream"
#include<conio.h>
using namespace std;
int demchan(int a[],int N)
{
int chan=0;
int le=0;
for(int i=0;i<N;i++)
{
if(a[i]%2==0)
chan ++;
}
return chan;
}
int demle(int a[],int N)
{
int le=0;
for(int i=0;i<N;i++)
{
if(a[i]%2!=0)
le ++;
}
return le;
}
void main()
{
int a[100],N;
cout<< " nhap so phan tu can su dung : ";
cin>> N;
for(int i=0;i<N;i++)
{
cout<<" nhap phan tu thu " <<i<<" : ";
cin>>a[i];
}
int chan=demchan(a,N);
int le=demle(a,N);
cout<<" so phan tu chan trong mang : " <<chan<<endl;
cout<<" so phan tu le trong mang : " <<le;
getch();
}
TIM BOI CUA 3 VA 5 TRONG MANG
#include"iostream"
#include<conio.h>
using namespace std;
void boiso(int a[],int N)
{
for(int i=0;i<N;i++)
{
if(a[i]%3==0 && a[i]%5==0)
cout<<" boi so cua 3 va 5 la : "<<a[i]<<endl;
}
}
void main()
{
int a[100],N;
cout << " nhap so phan tu can su dung : ";
cin>>N;
for(int i=0;i<N;i++)
{
cout<<" nhap phan tu thu "<< i << " : ";
cin>>a[i];
}
boiso(a,N);
getch();
}
tIM MAX
# include"iostream"
#include<conio.h>
using namespace std;
void main()
{
int N,a[100];
cout<<"nhap vao so phan tu can su dung : ";
cin>>N ;
for (int i=0; i<N;i++)
{
cout<< " nhap vao phan tu thu "<<i<<" : ";
cin>>a[i];
}
cout<< " mang la : " ;
for(int i=0;i<N;i++)
cout<< a[i]<< " ";
int max=a[0];
for(int i=1;i<N;i++)
if (a[i] > max)
max=a[i];
cout<<" gia tri lon nhat trong mang la : " <<max;
getch();
TIM SO NGUYEN TO
# include"iostream"
#include<conio.h>
int N;
using namespace std;
bool ktsonguyento(int so)
{
bool kq=true;
bool i;
for( i=2;i< N;i++)
if(so%i==0)
break;
if(i<N)
kq=false;
return kq;
}
void main ()
{
cout <<" nhap N : " ;
cin>> N;
bool kq=ktsonguyento(N);
if(kq==true)
cout<< N << " la so nguyen to ";
if(kq==false)
cout<< N << " khong la so nguyen to ";
getch();
TIM SO NT TRONG DAY
#include "iostream"
#include<conio.h>
using namespace std;
int kiemtrasoNT(int so);
void nhapmang(int a[],int N)
{
for(int i=0;i<N;i++)
{
cout <<" nhap vao phan tu thu ";
cin>> a[i];
}
}
int demsoNT(int a[], int N)
{
int dem=0;
for(int i=0; i<N;i++)
{
if(kiemtrasoNT(a[i])==1)
dem ++;
}
return dem;
}
int kiemtrasoNT(int so)
{
int kq=1;
for( i=2;i<so;i++)
if(so%i==0)
break;
if(i< so)
kq=0;
return kq;
}
void main()
{
int N,a[100];
cout<<" nhap vao so phan tu can su dung : ";
cin>> N;
nhapmang(a,N);
int dem=demsoNT(a,N);
cout<< dem << " ";
getch();
}
VI TRI LON NHAT TRONG MANG
#include"iostream"
#include<conio.h>
using namespace std;
int vitriphantulonnhat(int a[],int N)
{
int max=a[0];
int phantulonnhat;
for(int i=0;i<N;i++)
{
if(a[i]>max)
{
max = a[i];
phantulonnhat= i;
}
}
return phantulonnhat;
}
void main ()
{
int a[100],N;
cout <<" nhap so phan tu can su dung : " ;
cin>>N;
for(int i=0;i<N;i++)
{
cout <<" nhap phan tu thu " <<i<< " : ";
cin>>a[i];
}
int phantulonnhat=vitriphantulonnhat(a,N);
cout<<" vi tri phan tu lon nhat la : "<< phantulonnhat;
getch();
TONG PHAN TU CHIA HET CHO 5
#include"iostream"
#include<conio.h>
using namespace std;
int tongchiahetcho5(int a[],int N)
{
int kq=0;
for(int i=0;i<N;i++)
{
if(a[i]%5==0)
kq=kq+a[i];
}
return kq;
}
void main()
{
int a[100],N;
cout<< " nhap so phan tu can su dung : ";
cin>> N;
for(int i=0;i<N;i++)
{
cout<<" nhap phan tu thu " <<i<<" : ";
cin>>a[i];
}
int kq=tongchiahetcho5(a,N);
cout<<" tong cac phan tu chia het cho 5 : " << kq;
getch();
}
XOA PHAN TU #include"iostream"
#include<conio.h>
using namespace std;
void xoavitridau(int a[],int n,int vitri)
{
for(int i=vitri;i<n-1;i++)
a[i]=a[i+1];
n--;
for(int i=0;i<n;i++)
cout << a[i]<<" ";
}
void main()
{
int a[100],n,vitri;
cout <<" nhap so phan tu can su dung :";
cin>> n;
for(int i=0;i<n;i++)
{
cout << " nhap phan tu thu "<< i << " : " ;
cin>>a[i];
}
cout << " nhap vi tri can xoa : ";
cin >>vitri;
xoavitridau(a,n,vitri);
getch();
}
TINH TONG CAC PHAN TU CHAN TRONG MANG
#include"iostream"
#include<conio.h>
using namespace std;
int demchan(int a[],int N)
{
int chan=0;
int le=0;
for(int i=0;i<N;i++)
{
if(a[i]%2==0)
chan=chan+a[i];
}
return chan;
}
int demle(int a[],int N)
{
int le=0;
for(int i=0;i<N;i++)
{
if(a[i]%2!=0)
le =le+a[i];
}
return le;
}
void main()
{
int a[100],N;
cout<< " nhap so phan tu can su dung : ";
cin>> N;
for(int i=0;i<N;i++)
{
cout<<" nhap phan tu thu " <<i<<" : ";
cin>>a[i];
}
int chan=demchan(a,N);
int le=demle(a,N);
cout<<" tong so phan tu chan trong mang : " <<chan<<endl;
cout<<" tong so phan tu le trong mang : " <<le;
getch();
SAP XEP KI TU TANG DAN
#include "iostream"
#include <conio.h>
using namespace std;
void hoanvi(int &a, int &b)
{
int tam=a;
a=b;
b=tam;
}
void sapxep(int a[],int N)
{
for(int i=0;i<N-1;i++)
for(int j=i+1;j<N;j++)
if(a[i]>a[j])
hoanvi(a[i],a[j]);
cout <<" mang duoc sap xep la : ";
for(int i=0;i<N;i++)
{
cout <<a[i]<<" ";
}
}
void main()
{
int N,a[100];
cout<<" nhap so phan tu can su dung : ";
cin>> N;
for (int i=0;i<N;i++)
{
cout <<" nhap vao phan tu thu "<<i<< " : ";
cin>>a[i];
}
sapxep(a,N);
getch();
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