C Program to Animate a Man Drawing Water From Well

This is a c program to animate a man drawing water from well. This is computer graphics lab experiment. The program uses graphics library in c (graphics.h). The output is as follows:


 The program is as follows:

Blooming Flower and Bee Animation C Program - Computer Graphics Lab Experiment

One of my graphics lab questions was to write a c program to animate a blooming flower and a bee (or a beetle) that comes to the flower, sit on it and fly away. The program uses graphics.h header file.

Output:

Program 

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>
int i,xmax,ymax;
int startx,starty;
int stopped=0;

void drawFlower(int i)
{
setcolor(GREEN);
line(xmax/2,ymax/2,xmax/2,ymax/2+100);
setcolor(BROWN);
setfillstyle(SOLID_FILL,YELLOW);
fillellipse(xmax/2,ymax/2,10+1.8*i,5+.6*i);
fillellipse(xmax/2,ymax/2,5+.6*i,10+1.8*i);
setcolor(BROWN);
setfillstyle(SOLID_FILL,RED);
fillellipse(xmax/2,ymax/2,5+.6*i,5+.6*i);
}

void drawBee(int i)
{
startx+=2;
starty+=7*sin(i);
setcolor(BROWN);
setfillstyle(SOLID_FILL,BLUE);
fillellipse(startx,starty,12,5);
setcolor(BLUE);
fillellipse(startx,starty,5,10*(i%2));
fillellipse(startx+8,starty-3,1,1);
fillellipse(startx+8,starty+3,1,1);
line(startx+9,starty-2,startx+11,starty-5);
line(startx+9,starty+2,startx+11,starty+5);
}

void main()
{
int max,may,i,t;
int gm=DETECT,gd;
initgraph(&gm,&gd," ");
xmax=getmaxx();
ymax=getmaxy();
startx=xmax/2-100;
starty=ymax/2;
setbkcolor(WHITE);
getch();
for(i=0;i<20;i++)
 {
 delay(120);
 cleardevice();
 drawFlower(i);
 }
t=i;

for(i=0;startx+i<xmax-60;i++)
       {
       delay(90);
       cleardevice();
       drawFlower(t);
       drawBee(i);
       if(stopped==0&&abs(startx-xmax/2)<10&&abs(starty-ymax/2)<15)
  {
  delay(2500);
  stopped=1;
  }
       }
getch();

}

C Program to Simulate Round Robin CPU Sceduling Algorithm

The round robin CPU scheduling algorithm is simulated using C program. The time slice or time quantum is read from the user.

Program:

#include<stdio.h>
struct process{



int burst,wait,comp,f;
}p[20]={0,0};
int main(){
int
n,i,j,totalwait=0,totalturn=0,quantum,flag=1,
time=0;
printf("\nEnter The No Of Process
:");
scanf("%d",&n);
printf("\nEnter The Quantum time (in ms)
:");
scanf("%d",&quantum);
for(i=0;i<n;i++){
printf("Enter The Burst Time (in ms) For
Process #%2d :",i+1);
scanf("%d",&p[i].burst);
p[i].f=1;
}
printf("\nOrder Of Execution \n");
printf("\nProcess \tStarting\tEnding\tRemaining");
printf("\n\tTime \tTime\tTime");
while(flag==1){
flag=0;
for(i=0;i<n;i++){
if(p[i].f==1){
flag=1;
j=quantum;
if((p[i].burst-p[i].comp)>quantum){
p[i].comp+=quantum;
}
else{
p[i].wait=time-p[i].comp;
j=p[i].burst-p[i].comp;
p[i].comp=p[i].burst;
p[i].f=0;
}
printf("\nprocess # %-3d %-10d %-10d %-10d",i+1,time,time+j,p[i].burst-
p[i].comp);
time+=j;
}}}
printf("\n\n------------------");
printf("\nProcess \t Waiting Time  TurnAround Time ");
for(i=0;i<n;i++){
printf("\nProcess # %-12d%-15d%-15d",i+1,p[i].wait,p[i].wait+p[i].burst);
totalwait=totalwait+p[i].wait;
totalturn=totalturn+p[i].wait+p[i].burst;
}
printf("\n\nAverage\n------------------");
printf("\nWaiting Time : %f ms",totalwait/(float)n);
printf("\nTurnAround Time : %f ms\n\n",totalturn/(float)n);
return 0;
}

Simulation of FCFS CPU Scheduling Algorithm in C

This is a C program to simulate First come first served (FCFS) CPU scheduling algorithm. First come first served algorithm serves each processes (or jobs) in the order of arrival. The process with lowest arrival time is executed first.

Program:
#include<stdio.h>
struct process
{
int burst,wait;
}p[20]={0,0};



int main()
{
int n,i,totalwait=0,totalturn=0;
printf("\nEnter The No Of Process :");
scanf("%d",&n);
for(i=0;i<n;i++)
{
printf("Enter The Burst Time (in ms) For Process #%2d :",i+1);
scanf("%d",&p[i].burst);
}
printf("\nProcess \t Waiting Time\tTurnAround Time ");
printf("\n\t (in ms)\t(in ms)");
for(i=0;i<n;i++)
{
printf("\nProcess # %-12d%-15d%-15d",i+1,p[i].wait,p[i].wait+p[i].burst);
p[i+1].wait=p[i].wait+p[i].burst;
totalwait=totalwait+p[i].wait;
totalturn=totalturn+p[i].wait+p[i].burst;
}
printf("\n\nAVERAGE\n--------- ");
printf("\nWaiting Time : %f ms",totalwait/(float)n);
printf("\nTurnAround Time : %f ms\n\n",totalturn/(float)n);
return 0;
}

Output:
Enter The No Of Process :3
Enter The Burst Time (in ms) For Process # 1 :10
Enter The Burst Time (in ms) For Process # 2 :30
Enter The Burst Time (in ms) For Process # 3 :20
Process    Waiting Time     Turn Around Time
                     (in ms)                      (in ms)
Process # 1     0                               10
Process # 2    10                              40
Process # 3    40                              60

AVERAGE
---------
Waiting Time : 16.666667 ms
TurnAround Time : 36.666667 ms

C Program to Simulate the ls Command in Linux Operating system

This is a c program to do Simulation of ls Command in linux. The ls command lists all the contents of the directory including filse and sub-directories. The following c program in simulates the ls command.

#include<stdio.h>
#include<dirent.h>
main()
{
char dirname[10];
DIR*p;
struct dirent *d;
printf("Enter directory name\n");
scanf("%s",dirname);
p=opendir(dirname);
if(p==NULL)
  {
  perror("Cannot find directory");
  exit(-1);
  }
while(d=readdir(p))
  printf("%s\n",d->d_name);
}

Related Posts:

C Program to Simulate ls Command in Linux
C Program to Simulate Round Robin CPU Scheduling Algorithm
C Program to Simulate Priority CPU Scheduling Algorithm
C Program to Simulate First Come First Serve (FCFS) CPU Scheduling Algorithm
C Program to Simulate rmdir Command or Delete Directory
C Program to Open, Read and Write Files
C Program to Create Process and Display Process ID - OS Lab Program
How to Use Fork and Exec System Calls
How to Use Exit System Call
C Program to make Parent Process Wait for Child to Terminate
C Program to Simulate GREP Command in Linux
C Program to make Child Process an Orphan Process
C Program to Show Process ID in Linux
C Program for Inter Process Communication using Pipes or Named Pipes (Chat Program)
C Program to Create a Process Using Fork System Call

C Program to Simulate grep Command in Linux

This post contains C program to simulate grep command in Linux or Unix operating systems

Simulation of  grep command in Linux

#include<stdio.h>
#include<string.h>
void main()
{
char fn[10],pat[10],temp[200];
FILE *fp;
printf("Enter file name\n");
scanf("%s",fn);
printf("Enter pattern to be searched\n");
scanf("%s",pat);
fp=fopen(fn,"r");
while(!feof(fp))
{
fgets(temp,1000,fp);
if(strstr(temp,pat))
  printf("%s",temp);
}
fclose(fp);
}

Related Posts:

C Program to Simulate ls Command in Linux
C Program to Simulate Round Robin CPU Scheduling Algorithm
C Program to Simulate Priority CPU Scheduling Algorithm
C Program to Simulate Shortest Job First (SJF) CPU Scheduling Algorithm
C Program to Simulate First Come First Serve (FCFS) CPU Scheduling Algorithm
C Program to Simulate rmdir Command or Delete Directory
C Program to Open, Read and Write Files
C Program to Create Process and Display Process ID - OS Lab Program
How to Use Fork and Exec System Calls
How to Use Exit System Call
C Program to make Parent Process Wait for Child to Terminate
C Program to make Child Process an Orphan Process
C Program to Show Process ID in Linux
C Program for Inter Process Communication using Pipes or Named Pipes (Chat Program)
C Program to Create a Process Using Fork System Call

C Program to Remove (Delete) a Directory using LINUX System Calls

This is a C program to delete  or remove a directory using the system calls in Linux or Unix operating systems. The program make use of the remove() system call in Linux.

#include<stdio.h>
#include<fcntl.h>
main()
{



char fn[10];
printf("Enter source filename\n");
scanf("%s",fn);
if(remove(fn)==0)
printf("File removed\n");
else
printf("File cannot be removed\n");
}

C Program to open, read and write files and perform file copy operation usingSystem Calls in UNIX

Write a program to open, read and write files and perform file copy operation. This program show how to open, read, write and copy files using Linux or Unix system calls like open(), read() and write().

#include<stdio.h>
#include<fcntl.h>
main()
{


char buff[1000],fn1[10],fn2[10];
int fd1,fd2,n;
printf("Enter source filename\n");
scanf("%s",fn1);
printf("Enter destination file name\n");
scanf("%s",fn2);
fd1=open(fn1,O_RDONLY);
n=read(fd1,buff,1000);
fd2=open(fn2,O_CREAT|O_WRONLY);
n=write(fd2,buff,n);
close(fd1);
close(fd2);
}

C Program to Open, Read and Write a file using System Calls

This is a C program to open , read and write files using system calls in Linux (UNIX) operating systems. The system calls open(), read() and write() are used in the C program to open, read and write files in Unix/Linux operating systems.

#include<stdio.h>
#include<fcntl.h>
main()
{


char buff[100],fn[10];
int fd,n;
printf("Enter file name\n");
scanf("%s",fn);
fd=open(fn,O_RDONLY);
n=read(fd,buff,100);
n=write(1,buff,n);
close(fd);
}

Using System calls in C Program to rename a Directory in Linux

C Program to rename a directory in Unix or Linux operating systems using system call rename().

#include<stdio.h>
main()
{

char s[10],d[10];
printf("Enter source Dir Name:\n");
scanf("%s",s);
printf("Enter New Dir Name:\n");
scanf("%s",d);
if(rename(s,d)==-1)
perror("Can't be changed\n");
else
printf("%s is changed to %s\n\n",s,d);
}

How to Create process and display Process ID (pid) of Both Parent and Child

This program shows how to create process and display Process ID (pid) of Both Parent and Child processes. The process is created using the fork system call in UNIX (Linux) operating systems.

#include<stdio.h>
#include<dirent.h>
main(int argc,char **argv)
{

int pid,i;
for(i=0;i<atoi(argv[1]);i++)
{
pid=fork();
if(pid==0)
{
printf("child process id %d Parent process
id %d\n",getpid(),getppid());
}}}

How to use fork and exec System Call

Using fork and exec System calls in Linux (UNIX) operating systems. Fork system call is used to create a child process from a parent process.
#include<stdio.h>
main()
{

int pid;
pid=fork();
printf("%d\n",pid);
if(pid==0)
{
exec("/bin/date\n",NULL,NULL);
exit(0); }
else
{
printf("Parent process %d\n",pid); }}
if(sp)
while(dd=readdir(sp))
printf("--> %s\n",dd->d_name);
}
}

How to use exit() System call

C program to show how to use exit system call. The function exit() is used to exit from a process (or to terminate a process). This works both in Linux or UNIX and Windows operating systems.

#include<stdio.h>
main()
{

int pid;
pid=fork();
printf("%d\n",pid);
if(pid<0)
{
perror("Child can't be executed\n");
exit(-1);
}
else
{
printf("Child created\n");
exit(0);
}
}

C Program to Display and Set System Time and Date Using 8086 Interrupts

This is a C Program to Display and Set System Time and Date Using 8086 Interrupts. Interrupt number 21 (in hexadecimal) is used to:

Output of c Program to get and set system time and date 

• Get System time
• Set System time
• Get System Date
• Set System Date

To Get system date:

- Call interrupt 0x21 (hexadecimal) 

- AH (higher byte of accumulator) should be made equal to 2A (hex) before calling interrupt

Output:

• day in DL
• Month in DH
• Year in CX

To set System Date:

- Call interrupt 0x21 (hexadecimal) 

- AH (higher byte of accumulator) should be made equal to 2B (hex) before calling interrupt

- Before Calling interrupt, store:

• Year in CX
• Month in DH
• Day in DL

To Get system time:

- Call interrupt 0x21 (hexadecimal) 

- AH (higher byte of accumulator) should be made equal to 2C (hex) before calling interrupt

Output:

• Hours in CH
• Minutes in CL
• Seconds in DH
• 1/100 th of a second in DL

To set System Time:







- Call interrupt 0x21 (hexadecimal) 

- AH (higher byte of accumulator) should be made equal to 2D (hex) before calling interrupt
- Before Calling interrupt, store:

Hour in CH 
Minutes in CL
Seconds in DH 
1/100 th of second in DL

#include<stdio.h>
#include<dos.h>
#include<conio.h>

void main()
 {
 int day,month,year,tflag=0,dflag=0,hr,min,sec;
 union REGS inreg,outreg;
DISDATE:printf("\nCurrent date:\n");
 inreg.h.ah=0x2a;
 int86(0x21,&inreg,&outreg);
 printf("%d-%d-%d ",outreg.h.dl,outreg.h.dh,outreg.x.cx);
 switch(outreg.h.al)
  {
  case 0:printf("Sunday");break;
  case 1:printf("Monday");break;
  case 2:printf("Tueday");break;
  case 3:printf("Wednesday");break;
  case 4:printf("Thursday");break;
  case 5:printf("Friday");break;
  case 6:printf("Sunday");break;
  }
 if(dflag==1)
  goto SETTIME;
DISTIME:printf("\nCurrent Time:\n");
 inreg.h.ah=0x2c;
 int86(0x21,&inreg,&outreg);
 printf("%d:%d:%d.%d ",outreg.h.ch,outreg.h.cl,outreg.h.dh,outreg.h.dl);
 if(tflag==1)
  goto END;
SETDATE:printf("\nSet Date.\nDay,Month and Year\n");
 scanf("%d%d%d",&day,&month,&year);
 inreg.h.ah=0x2b;
 inreg.x.cx=year;
 inreg.h.dh=month;
 inreg.h.dl=day;
 int86(0x21,&inreg,&outreg);
 if(outreg.h.al==0x00)
  {
  dflag=1;
  goto DISDATE;
  }
 else
  {
  printf("\nInvalid entry");
  getch();
  exit(0);
  }
SETTIME:printf("\nSet Time. Enter Time.\nHour,Minutes and Seconds\n");
 scanf("%d%d%d",&hr,&min,&sec);
 inreg.h.ah=0x2d;
 inreg.h.ch=hr;
 inreg.h.dh=sec;
 inreg.h.cl=min;
 inreg.h.dl=0;
 int86(0x21,&inreg,&outreg);
 if(outreg.h.al==0x00)
  {
  tflag=1;
  goto DISTIME;
  }
 else
  {
  printf("\nInvalid entry");
  getch();
  exit(0);
  }
END: getch();
 }

Determinant of Matrix Program - Program to Find Determinant of Matrix

In this post i am sharing a C program to calculate determinant of matrices. Determinant exists only for square matrix. Here i have wrote a c program to find determinant of matrices of order less than or equal to 3.

#include<stdio.h>

void main()
{
int a[10][10],i,m,j;
int det=0;
printf("\nEnter the order of matrix:\n ");
scanf("%i",&m);
printf("\nenter elements\n");
for(i=0;i<m;i++)
 {
 for(j=0;j<m;j++)
  scanf("%d",&a[i][j]);
 }
printf("\nThe matrix is\n");
for(i=0;i<m;i++)
 {
 printf("\n");
 for(j=0;j<m;j++)
  printf("%3d",a[i][j]);
 }
printf("\nthe transpose is\n");
for(i=0;i<m;i++)
{
for(j=0;j<m;j++)
printf("%3i",a[j][i]);
printf("\n");
}
if(m==1)
{
det=a[0][0];
printf("det=%i",det);
}
else if(m==2)
{
int k=1,l=1;
for(i=0;i<2;i++)
for(j=0;j<2;j++)
{
if(i==j)
k*=a[i][j];
else
l*=a[i][j];
}
printf("\ndeterminant=%i",k-l);
}
else if(m==3)
{
for(i=0;i<3;i++)
det=det+(a[0][i]*(a[1][(i+1)%3]*a[2][(i+2)%3]-a[1][(i+2)%3]*a[2][(i+1)%3])); 
printf("\nDeterminant of matrix is: %d",det);
}
else
printf("This program can't calculate determinant of matrix of order greater than 3");
}