杨辉三角

      #include<iostream>

#include<iomanip>
using namespace std;
int main()
{
int y[10][10] = {1},row,col;
for(row = 1;row<10;row++)
{
y[row][0] = 1;
for(col = 1;col <= row;col++)
y[row][col] = y[row - 1][col] + y[row - 1][col - 1];
}
for(row = 0;row<10;row++)
{
for(col = 0;col <= row;col++)
cout<<setw(4)<<y[row][col]<<" ";
cout<<endl;
 
}

return 0;
}