include <iostream.h> void maino f int i,j, k, m; for(i=1;i<=9;i++) for〔=1;j<=9-i;j++) cout<<"' for(k=l; k<=i; k++) cout<<k for(mi-1; m>=l; m--) cout<<endl; 6课本的第9题 1#include <iostream.h> #include <iomanip. h> oid maino cout for(int i=l; K<=9; 1++) cout <<setw(4)<< cout << n for(int i-l; K<=9; i++) for(int j=l; j<=9; j++) cout <<setw (4)<<ij cout <<endl; 3 2 )#include <iostream. h> #include <iomanip h> void maino {out<<"#"; for(int Fl; K<=9; i++) ut <<setw(4)<<i for(int Fl; K<=9; i++ cout <<setw (3)<<i cout <<setw(4)<<i*j; cout <<endl;j# include <iostream.h> void main() { int i,j,k,m; for(i=1;i<=9;i++) { { for (j=1;j<=9-i;j++) cout<<" "; for (k=1;k<=i;k++) cout<<k; for (m=i-1;m>=1;m--) cout<<m; } cout<<endl; } } ⒍课本的第 9 题 ⑴ #include <iostream.h> #include <iomanip.h> void main() {cout <<" *"; for(int i=1; i<=9; i++) cout <<setw(4) <<i; cout <<"\n-----------------------------------------\n"; for(int i=1; i<=9; i++){ cout <<setw(3) <<i; for(int j=1; j<=9; j++) cout <<setw(4) <<i*j; cout <<endl; } } ⑵ #include <iostream.h> #include <iomanip.h> void main() {cout <<" *"; for(int i=1; i<=9; i++) cout <<setw(4) <<i; cout <<"\n-----------------------------------------\n"; for(int i=1; i<=9; i++){ cout <<setw(3) <<i; for(int j=1; j<=i; j++) cout <<setw(4) <<i*j; cout <<endl; } }