[C++ Hướng đối tượng] Code mẩu bài tập về nhà #3 :19.09

Ý tưởng: dùng mãng hai chiều. Chi tiết hơn -> hãy tham gia buổi học nhóm ngày mai: Ca 2 , P205, CS1, Q7.

#include<iostream.h>

#include<conio.h>

#include<time.h>

#define r 22

void time_start()

{

time_t rawtime;

struct tm * timeinfo;

time ( &rawtime );

timeinfo = localtime ( &rawtime );

cout<<timeinfo ->tm_hour<<": ";

cout<<timeinfo ->tm_min<<": ";

cout<<timeinfo ->tm_sec;

}

int main()

{

char a[r][44],s1=30,s2=31,s3=0222;

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

for(int j=0;j<44;j++)

a[i][j]=' ';

int n,mid,p=0,count;

R:system("cls");

cout<<"\t\t\t Home work #3 C++ 19.Sep.12\n";

cout<<"\t\tby Viet Trung - 05CDCT1 http://izone4u.blogspot.com/\n";

cout<<"\t IDE,CLR is powered by C-Free 5.0. All rights reserved\n";

cout<<"\t\t\t Welcome to Msys-Console\n";

cout<<"\t\t\t\t Clock ";time_start();

cout<<"\n--------------------------------------------------------------------------------\n";

cout<<"Nhap so dong [3-22]: ";

cin>>n;

if(n<2||n>22)

{

cout<<"\nFailed, Press any key to re-type !";

getch();

goto R;

}

mid=((n-1)*2+1)/2;

while(p<n)

{

//p++;//Xoa dong giua

for(int t=p;t<n;t++)

a[t][mid-p]='*';

for(int t=p;t<n;t++)

a[t][mid+p]='*';

p++;

};

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

               count+=((n-1)*2+1)-(2*f);

system("cls");

cout<<”So sao da dung: “<<count<<endl;

cout<<"\nStyle 1 - "<<s1<<endl<<endl;

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

for(int j=0;j<= mid*2;j++)

{

cout<<a[i][j];

if(j==mid*2) cout<<endl;

}

cout<<"\nStyle 2 - "<<s2<<endl<<endl;

for(int i=n-1;i>=0;i--)

for(int j=0;j<= mid*2;j++)

{

cout<<a[i][j];

if(j==mid*2) cout<<endl;

}

p=0;

while(p<n-1)

{

for(int t=p+1;t<n-1;t++)

a[t][mid-p]=' ';

for(int t=p+1;t<n-1;t++)

a[t][mid+p]=' ';

p++;

};

cout<<"\nStyle 3 - "<<s3<<endl<<endl;

for(int i=n-1;i>=0;i--)

for(int j=0;j<= mid*2;j++)

{

cout<<a[i][j];

if(j==mid*2) cout<<endl;

}

cout<<endl;

return 0;

}