用C++编程序打印一个数字金字塔

#include
void main()
{
const int ta=9;
int i,j,k;
for(i=1;i<=ta;i++)
{
for(k=1;k<=ta-i;k++)
printf(" ");
for(j=1;j<=i;j++)
printf("%d",j);
for(j=i-1;j>0;j--)
printf("%d",j);
printf("\n");
}
}

#include using namespace std;int main()
{
for(int i = 1; i <= 9; ++i)
{
for(int m = 1; m <= 9 - i; ++m)
cout << " ";
int j = 1;
for(; j <= i; ++j)
cout << j << " ";
for(int k = i - 1; k >= 1; --k)
cout << k << " ";
cout << endl;
}
system("pause");
return 0;
}

#include "iostream"
using namespace std;void main()
{ int i,j;
for(i=1;i<=9;i++)
{
for(j=1;j<=10-i;j++) cout<<" ";
for(j=-(i-1);j<=i-1;j++)
cout< cout< }
}