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| /*program to draw a graph of rainfall acording to % for 5 years*/ | |
| #include<stdio.h> | |
| #include<conio.h> | |
| #include<graphics.h> | |
| #include<math.h> | |
| void drawline(int,int,int,int,int); | |
| void main() | |
| { | |
| int gd=0,gm,i; | |
| int x,y,data1,data2,data3,data4,data5; | |
| int blue=1,red=4,green=2,magneta=5,cyan=3,white=15; | |
| initgraph(&gd,&gm,"C:\\TC\\BGI"); | |
| x=getmaxx(); //getting max resolution | |
| y=getmaxy(); | |
| printf("\nENTER THE RAINFALL DATA FOR YEAR 2010 : "); //accepting data from user | |
| scanf("%d",&data1); | |
| printf("ENTER THE RAINFALL DATA FOR YEAR 2011 : "); | |
| scanf("%d",&data2); | |
| printf("ENTER THE RAINFALL DATA FOR YEAR 2012 : "); | |
| scanf("%d",&data3); | |
| printf("ENTER THE RAINFALL DATA FOR YEAR 2013 : "); | |
| scanf("%d",&data4); | |
| printf("ENTER THE RAINFALL DATA FOR YEAR 2014 : "); | |
| scanf("%d",&data5); | |
| drawline(0,y/2+200,x,y/2+200,white); //drawing x and y axes | |
| drawline(x/2-250,0,x/2-250,y,white); | |
| //bar 1 | |
| for(i=200;i<=220;i++) | |
| { | |
| drawline(x/2-i,y-40,x/2-i,y-40-data1,blue); | |
| } | |
| //bar 2 | |
| for(i=150;i<=170;i++) | |
| { | |
| drawline(x/2-i,y-40,x/2-i,y-40-data2,green); | |
| } | |
| //bar 3 | |
| for(i=100;i<=120;i++) | |
| { | |
| drawline(x/2-i,y-40,x/2-i,y-40-data3,cyan); | |
| } | |
| //bar 4 | |
| for(i=50;i<=70;i++) | |
| { | |
| drawline(x/2-i,y-40,x/2-i,y-40-data4,red); | |
| } | |
| //bar 5 | |
| for(i=0;i<=20;i++) | |
| { | |
| drawline(x/2-i,y-40,x/2-i,y-40-data5,magneta); | |
| } | |
| getch(); | |
| } | |
| void drawline (int xa,int ya,int xb,int yb,int color) | |
| { | |
| int i=0; | |
| //int xorigin,yorigin; | |
| float x1,y1,dx,dy,length,x,y,xinr,yinr; | |
| //xorigin=getmaxx(); | |
| //yorigin=getmaxy(); | |
| if(abs(xb-xa) > abs(yb-ya)) //step 2 calculate lenght,dx,dy | |
| { | |
| length=abs(xb-xa); | |
| } | |
| else | |
| { | |
| length=abs(yb-ya); | |
| } | |
| dx=(xb-xa)/length; | |
| dy=(yb-ya)/length; | |
| putpixel(xa,ya,color); //step 3 print first pixel | |
| x1=xa; | |
| y1=ya; | |
| for(i=0;i<length;i++) //step 4 print the next pixels by incrementing | |
| { | |
| x1=x1+dx; | |
| y1=y1+dy; | |
| putpixel(x1+0.5,y1+0.5,color); | |
| } | |
| return; | |
| } |
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