[C++知识库]C语言图形化编程

画折线图

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<stdlib.h>

void hDrawk(char c[]);
void vDrawk(char c[]);
void Drawfline(int b[]);
int xs=48,ys=50;

void hDrawk(char c[])
{
	int i,j=65;
	line(65,360,565,360);

	for(i=0;i<11;i++)
	{
		line(j,375,j,360);
		itoa(i,c,10);
		outtextxy(j,380,c);
		j+=xs;
	}
}

void vDrawk(char c[])
{
	int i,j=360;
	line(65,80,65,360);
	for(i=0;i<=5;i++)
	{
		line(45,j,65,j);
		itoa(i,c,10);
		outtextxy(35,j,c);
		j-=ys;
	}
}

void Drawfline(int b[])
{
	int i,j=65;
	moveto(j,360-(b[0]*ys));
	for(i=0;i<9;i++)
	{
		lineto(j+xs,360-(b[i]*ys));
		j+=xs;
	}
}

void main()
{
	int i;
	int gdriver=DETECT,gmode=0;
	int b[]={1,4,2,5,3,5,1,4,2,3};
	char c[10];
	initgraph(&gdriver,&gmode,"");
	outtextxy(150,70,"the value along with the month changing!");
	hDrawk(c);
	outtextxy(580,365,"month");
	vDrawk(c);
	outtextxy(65,70,"value");
	Drawfline(b);
	getch();
	closegraph();
}