1：#include<iostream>

using namespace std;

int main()

{ int i,j,k,n;

cout<<"请输入n的值：";

cin>>n;

for (i=1;i<=n;i++)

{

if (i<=n/2)

{

for (j=1;j<=n/2+1-i;j++)

cout<<" ";

for (k=1;k<=2*i-1;k++)

cout<<"*";

cout<<endl;

}

else

{

for (j=1;j<=i-n/2-1;j++)

cout<<" ";

for (k=1;k<=(2*(n-i)+1);k++)

cout<<"*";

cout<<endl;

}

}

system("pause");

return 0;

}

2：

#include<iostream>

using namespace std;

int main()

{ int i,j,k,n,m;

cout<<"请输入n的值：";

cin>>n;

for (i=1;i<=n;i++)

{

for (j=1;j<=n-i;j++)

cout<<" ";

for (k=1;k<=i;k++)

cout<<"*";

cout<<" ";

for (m=1;m<=i;m++)

cout<<"&";

cout<<endl;

}

system("pause");

return 0;

}

/*

请输入n的值：10

* &

** &&

*** &&&

**** &&&&

***** &&&&&

****** &&&&&&

******* &&&&&&&

******** &&&&&&&&

********* &&&&&&&&&

********** &&&&&&&&&&

3：

#include<iostream>

#include<iomanip>

using namespace std;

int main()

{ int i,j,k,n;

cout<<"请输入n的值："<<endl;

cin>>n;

for (i=1;i<=n;i++)

{

if (i<=n/2)

{

for (j=1;j<=n/2+1-i;j++)

cout<<setw(4)<<" ";

for (k=1;k<=2*i-1;k++)

cout<<setw(4)<<"*";

cout<<endl;

}

else

{

for (j=1;j<=i-n/2-1;j++)

cout<<setw(4)<<" ";

for (k=1;k<=2*(n-i)+1;k++)

cout<<setw(4)<<"*";

cout<<endl;

}

}

system("pause");

return 0;

}

请输入n的值：

9

*

* * *

* * * * *

* * * * * * *

* * * * * * * * *

* * * * * * *

* * * * *

* * *

*

4：

#include<iostream>

using namespace std;

int main()

{ int i,j,k,n;

cout<<"请输入n的值："<<endl;

cin>>n;

for (i=1;i<=n;i++)

{

for (j=1;j<=n-i;j++)

cout<<" ";

for (k=1;k<=2*i-1;k++)

cout<<char('A'+i-1);

cout<<endl;

}

system("pause");

return 0;

}

/*

请输入n的值：

10

A

BBB

CCCCC

DDDDDDD

EEEEEEEEE

FFFFFFFFFFF

GGGGGGGGGGGGG

HHHHHHHHHHHHHHH

IIIIIIIIIIIIIIIII

JJJJJJJJJJJJJJJJJJJ

5：

#include<iostream>

using namespace std;

int main()

{ int n,i,j,k;

cout<<"请输入n的值:"<<endl;

cin>>n;

for(i=1;i<=n;i++)

{

for(j=i;j>0;j--)

cout<<"*";

for(k=0;k<=2*(n-i);k++)

cout<<" ";

for(j=i;j>0;j--)

cout<<"*";

cout<<endl;

}

system("pause");

return 0;

}

请输入n的值:

7

* *

** **

*** ***

**** ****

***** *****

****** ******

******* *******

6：

#include<iostream>

#include<math>

using namespace std;

int main()

{ int i,j,n;

cout<<"请输入n的值:"<<endl;

cin>>n;

for (i=1;i<=n;i++)

{

cout<<i<<'\t';

for (j=1;j<=n+1;j++)

cout<<fabs(j-i)<<'\t';

cout<<endl;

}

system("pause");

return 0;

}

/*

请输入n的值:

6

1 0 1 2 3 4 5 6

2 1 0 1 2 3 4 5

3 2 1 0 1 2 3 4

4 3 2 1 0 1 2 3

5 4 3 2 1 0 1 2

6 5 4 3 2 1 0 1

*/

7：

#include<iostream>

#include<iomanip>

using namespace std;

int fact(int n);

int com(int m,int r);

int main()

{ int i,k,n,j;

cout<<"请输入n的值：";

cin>>n;

for (i=1;i<=n;i++)

{ for (j=1;j<=n-i;j++)

cout<<setw(2)<<" ";

for (k=0;k<=i-1;k++)

cout<<setw(4)<<com((i-1),k);

cout<<endl;

}

system("pause");

return 0;

}

int fact(int n)

{ int i,j=1;

for (i=1;i<=n;i++)

j*=i;

return (j);

}

int com(int m,int r)

{ int y;

y=fact(m)/(fact(r)*fact(m-r));

return (y);

}

/*

请输入n的值：10

1

1 1

1 2 1

1 3 3 1

1 4 6 4 1

1 5 10 10 5 1

1 6 15 20 15 6 1

1 7 21 35 35 21 7 1

1 8 28 56 70 56 28 8 1

1 9 36 84 126 126 84 36 9 1

*/