Question

In: Computer Science

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> int main(int argc, char *argv[]) {     FILE *myFile;...

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>


int main(int argc, char *argv[])

{

    FILE *myFile;

    char fname[20];

    //int sum = 0;

    int i, j, k, tmp =0;

    int num = 0;

    int mass = 0;

    int count = 0;

    int fuel = 0;

    int total = 0;

    int M[1000];

    char ch;

    char buffer[32];

    printf(" Input the filename to be opened : ");

    scanf("%s",fname);

    myFile = fopen(fname, "r");

    if(myFile == NULL)

    {

        printf("Can't open file\n");

    }

while(1)

    {

        ch = fgetc(myFile);

        if(ch == EOF)

        {

            break;

        }

        else if(ch == '\n')

        {

            M[j] = atoi(buffer);

            j++;

            bzero(buffer, 32);

            i = 0;

            continue;

        }

        else

        {

            buffer[i] = ch;

            i++;

        }

    }

    count = j;

    int sum = 0;

for(i = 0; i < count; i++)

    {

        sleep(1);

        fuel = M[i] / 4-3;

        if(fuel >= 1)

        {

            printf("Number [%d]: %d\n", i, M[i]);

            printf("Fuel: %d\n", fuel);

            sum = sum + fuel;

        }

        else

        {

            fuel = 1;

            printf("Number [%d]: %d\n", i, M[i]);

            printf("Fuel: %d\n", fuel);

            sum = sum + fuel;

        }

    }

    printf("\n");

    printf("Total Fuel: %d\n", sum);

    num = sum / 100;

    total = sum + (num * 10);

    printf("\n");

    printf("Fuel Load: %d\n\n", total);

}

I want this Same program to be done with Threads!

Solutions

Expert Solution

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

// A normal C function that is executed as a thread
// when its name is specified in pthread_create()
void *myThreadFun(void *vargp)
{
   sleep(1);
   FILE *myFile;

char fname[20];

//int sum = 0;

int i, j, k, tmp =0;

int num = 0;

int mass = 0;

int count = 0;

int fuel = 0;

int total = 0;

int M[1000];

char ch;

char buffer[32];

printf(" Input the filename to be opened : ");

scanf("%s",fname);

myFile = fopen(fname, "r");

if(myFile == NULL)

{

printf("Can't open file\n");

}

while(1)

{

ch = fgetc(myFile);

if(ch == EOF)

{

break;

}

else if(ch == '\n')

{

M[j] = atoi(buffer);

j++;

bzero(buffer, 32);

i = 0;

continue;

}

else

{

buffer[i] = ch;

i++;

}

}

count = j;

int sum = 0;

for(i = 0; i < count; i++)

{

sleep(1);

fuel = M[i] / 4-3;

if(fuel >= 1)

{

printf("Number [%d]: %d\n", i, M[i]);

printf("Fuel: %d\n", fuel);

sum = sum + fuel;

}

else

{

fuel = 1;

printf("Number [%d]: %d\n", i, M[i]);

printf("Fuel: %d\n", fuel);

sum = sum + fuel;

}

}

printf("\n");

printf("Total Fuel: %d\n", sum);

num = sum / 100;

total = sum + (num * 10);

printf("\n");

printf("Fuel Load: %d\n\n", total);
   return NULL;
}

int main()
{
   pthread_t thread_id;
   printf("Before Thread\n");
   pthread_create(&thread_id, NULL, myThreadFun, NULL);
   pthread_join(thread_id, NULL);
   printf("After Thread\n");
   exit(0);
}

venereology answered 1 year ago
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