Answer Posted / kiran baviskar

#include<pthread.h>
//#include<semaphore.h>
#include<stdio.h>
#include<stdlib.h>

pthread_mutex_t x,wsem;
pthread_t tid;
int readcount;

void intialize()
{
pthread_mutex_init(&x,NULL);
pthread_mutex_init(&wsem,NULL);
readcount=0;
}

void * reader (void * param)
{
int waittime;
waittime = rand() % 5;
printf("
Reader is trying to enter");
pthread_mutex_lock(&x);
readcount++;
if(readcount==1)
pthread_mutex_lock(&wsem);
printf("
%d Reader is inside ",readcount);
pthread_mutex_unlock(&x);
sleep(waittime);
pthread_mutex_lock(&x);
readcount--;
if(readcount==0)
pthread_mutex_unlock(&wsem);
pthread_mutex_unlock(&x);
printf("
Reader is Leaving");
}

void * writer (void * param)
{
int waittime;
waittime=rand() % 3;
printf("
Writer is trying to enter");
pthread_mutex_lock(&wsem);
printf("
Write has entered");
sleep(waittime);
pthread_mutex_unlock(&wsem);
printf("
Writer is leaving");
sleep(30);
exit(0);
}

int main()
{
int n1,n2,i;
printf("
Enter the no of readers: ");
scanf("%d",&n1);
printf("
Enter the no of writers: ");
scanf("%d",&n2);
for(i=0;i<n1;i++)
pthread_create(&tid,NULL,reader,NULL);
for(i=0;i<n2;i++)
pthread_create(&tid,NULL,writer,NULL);
sleep(30);
exit(0);
}

write a program that creates a sequenced array of numbers starting with 1 and alternately add 1 and then 2 to create the text number in the series , as shown below. 1,33,4,6,7,9,............147,148,150 Then , using a binary search , searches the array 100 times using randomly generated targets in the range of 1 to 150

3830

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U hv to enter a range from a and b and search hw many no. of times a pattern n. occurs between the range a and b. Eg :i/p:enter range :0 100 Enter pattern: 13 o/p: the no. times 13 occurred betwwn 0 to 100:1 Eg :i/p:enter range :100 1000 Enter pattern: 13 o/p: the no. times 13 occurred betwwn 100 to 1000: (in this 13,113,131,132,133…139,213,313,…913 all these will be counted)

2557

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write a program using 2 D that searches a number and display the number of items 12 inputs values input 15,20, 13, 30, 38, 40,16, 18, 20 ,18 ,20 enter no. to search : 20

3859

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write a program that reverses the input number of n.Formulate an equation to come up with the answer.

7733

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Performance Algorithm A performs 10n2 basic operations and algorithm B performs 300 lg n basic operations. For what value of n does algorithm B start to show its better performance?

7892

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can you please write a program for deadlock that can detect deadlock and to prevent deadlock.

3272

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write a program that prompt the user to enter his height and weight,then calculate the body mass index and show the algorithm used

4909

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3404

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Create a program to read two random data set in two files named data1.txt and data2.txt manifold contains integer numbers, whereas data2.txt file contains the float type numbers. Simpanlahmasing each into 2 pieces of data that is an array of type integer array and an array of type float, then calculate the average numbers in the second array.

2670

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how to take time as input in the format (12:02:13) from user so that controls remains between these columns?

2309

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i really need help about this.. write a program to display the set of odd and even numbers separately. find the highest and lowest value of the given numbers.

2787

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A suduco given & u hv 2 check if it is incomplete(blanks left),or correct or incorrect

2938

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Implement a command console for changing settings on a particular object. The command console should allow you to enter a string and will return the response (very similar to a terminal session). The commands are as follows: SET propertyname=newvalue will change the target object’s member named “propertyname” to have a value equal to “newvalue”. If the input value is incompatible (i.e. an int being set to a string), print out an appropriate error message. GET propertyname will print out the current value of the target object’s member named “propertyname”. GET * will print out a list of all target object members and their current values. The system should be extensible for future commands and should accept an arbitrary object, such that another developer could insert another object into the system and rely on the command console to get and set the properties correctly.

3992

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write a program to convert temperature from fa height into celcius and vise versa,use modular programming

3066

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Code for Small C++ Class to Transform Any Static Control into a Hyperlink Control?

3121

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