九九乘法表

main.cpp

#include<iostream.h>
#include "prow.h"
void main()
{
	fun1();
	cout<<'\n';
	cout<<'\n';
	fun2();
	cout<<'\n';
	cout<<'\n';
	fun3();
}

por1.cpp

#include<iostream.h>
#include "prow.h"
void fun1() 
{
	int i,j;
		cout<<'*';
	for(i=1;i<10;i++)
		cout<<"    "<<i;
	cout<<"\n";

	for(i=1;i<10;i++){
		cout<<i;
		for(j=1;j<10;j++)
		cout<<"    "<<i*j;
		cout<<"\n";
	}
}

por2.cpp

#include<iostream.h>
#include "prow.h"

void fun2() 
{
	int i,j;
		cout<<'*';
	for(i=1;i<10;i++)
		cout<<"    "<<i;
	cout<<"\n";

	for(i=1;i<10;i++){
		cout<<i;
		for(j=1;j<=i;j++)
		cout<<"    "<<i*j;
		cout<<"\n";
	}
	
}

por3.cpp

#include<iostream.h>
#include "prow.h"
void fun3() 
{
	int i,j;
		cout<<'*';
	for(i=1;i<10;i++)
		cout<<"    "<<i;
	cout<<"\n";

	for(i=1;i<10;i++){
		cout<<i;
		for(j=1;j<10;j++)
			if(j>=i)
		cout<<"    "<<i*j;
			else
		cout<<"    ";
		cout<<"\n";
	}
}

prow.h

#ifndef CIRCLE_H
#define CIRCLE_H
extern void fun1();
extern void fun2();
extern void fun3();
#endif