Logo 
Search:

C Programming Articles

Submit Article
Home » Articles » C Programming » Parallel Processing ProgramsRSS Feeds

PROGRAM to Search Occurances of Charaters from File in Parallel

Posted By: Luisa Fischer     Category: C Programming     Views: 1927

PROGRAM to Search Occurances of Charaters from File in Parallel

Code for PROGRAM to Search Occurances of Charaters from File in Parallel in C Programming

# include<stdio.h>
# include <pthread.h>

void *count();
int count1[27],ok;
FILE *fp;
pthread_t id;
pthread_mutex_t lock1;
main()
{
    int i,j,n_thread;
    fp=fopen("ass3.c","r");
    if(fp==NULL)
    {
        printf("File Reading Error");
        exit(0);
    }

    pthread_mutex_init(&lock1,NULL);
    printf("Enter the NO of Thread ");
    scanf("%d",&n_thread);
    ok=0;
    for(i=0;i<n_thread;i++)
        {
                
        
        if(0==pthread_create(&id,NULL,count,NULL))
                {
                        continue;
            
                }
                else
                {
                        printf("Error In Thread Creation\n");
                        exit(0);
                }
        }
    /*for(i=0;i<n_thread;i++)
{
if(0==pthread_create(&id,NULL,count,(void*)&i) );
continue;
else
printf("Thread Creation Problem");
}*/
ok=1; pthread_join(id,NULL); //count(); fclose(fp); for(i=0,j=65;i<26;i++,j++) { if(count1[i]!=0) printf("%c Is Occurc at %d times\n",j,count1[i]); } exit(0); } void *count() { int temp; char c; while(ok==0); while(feof(fp)==0) { pthread_mutex_lock(&lock1); c=fgetc(fp); pthread_mutex_unlock(&lock1); temp=toupper(c)-65; if(isalpha(c)) count1[temp]++; } pthread_exit(NULL); } /* OUTPUT:
-------
Enter the NO of Thread 3
A Is Occurc at 37 times
B Is Occurc at 1 times
C Is Occurc at 41 times
D Is Occurc at 32 times
E Is Occurc at 64 times
F Is Occurc at 31 times
G Is Occurc at 3 times
H Is Occurc at 28 times
I Is Occurc at 61 times
J Is Occurc at 5 times
K Is Occurc at 11 times
L Is Occurc at 37 times
M Is Occurc at 11 times
N Is Occurc at 52 times
O Is Occurc at 46 times
P Is Occurc at 30 times
R Is Occurc at 51 times
S Is Occurc at 13 times
T Is Occurc at 62 times
U Is Occurc at 28 times
V Is Occurc at 3 times
W Is Occurc at 2 times
X Is Occurc at 8 times
*/
  
Share: 



Luisa Fischer
Luisa Fischer author of PROGRAM to Search Occurances of Charaters from File in Parallel is from Frankfurt, Germany.
 
View All Articles

 
Please enter your Comment

  • Comment should be atleast 30 Characters.
  • Please put code inside [Code] your code [/Code].

 
No Comment Found, Be the First to post comment!