Question

$#include <stdio.h> #include <pthread.h> #include <assert.h> void proc(void *arg) printf(arg=ld\n, (long)arg); pthread exit($

1. (50 pts) Write a C or C++ program A6p1.c(pp) that accepts one command line argument which is an integer n between 2 and 6 inclusive. Generate a string of 60 random upper case English characters and store them somewhere (e.g. in a char array). Use pthread to create n threads to convert the string into a complementary string ('A''Z', 'B''Y', 'C''X', etc). You should divide this conversion task among the n threads as evenly as possible, Print out the string both before and after conversion on two separate lines. Hint: it is dangerous to have printing code in your thread function (s). You may refer to testThread.s testThread2.c, pthread ex1.c, pthread ex2.c for examples. Note: if you do not use pthread to divide the conversion task among the threads, you may get zero points. #include #include #include void proc(void *arg) printf("arg=ld\n", (long)arg); pthread exit((void )99);//if we have this function call, the main will print out "result-99" instead of "result=2016" return (void ) 2016 ; int main() int r pthread_t x; void *result; I/when pthread_creste and pthread_join successfully execute, they will return rapthread_create (&x, NULL, proc, Tvoid *)34); assert(r0); r=pthread join (x, &result); assert(r); printf("result=ld\n", (long) result ) ; return ; #include #include #include void sproc(void sarg) { int i; for(i-0;i

Answer 1

1->

#include <iostream>
#include <pthread.h>
#include <string>
#include <cstdlib>
    using namespace std;
char a[5][12];
int i, j;
void *convert(void *temp1)
{
    a[i][j] = 'A' + (25 - (a[i][j] - 'A')) % 26;
    return (void *)NULL;
}
int main(int argc, char **argv)
{
    if (argv[1][0] > '6' || argv[1][0] < '2')
    {
        cout << "Incorrect Arguments";
    }
    for (i = 0; i < 5; i++)
        for (j = 0; j < 12; j++)
            a[i][j] = 'A' + rand() % 26;
    pthread_t Threads[5][12];
    for (int i = 0; i < 5; i++)
        for (int j = 0; j < 12; j++)
            cout << a[i][j] << " ";
    cout << endl;
    for (i = 0; i < 5; i++)
        for (j = 0; j < 12; j++)
        {
            pthread_create(&Threads[i][j], NULL, convert, (void *)NULL);
        }
    for (int i = 0; i < 5; i++)
        for (int j = 0; j < 12; j++)
        {
            pthread_join(Threads[i][j], NULL);
        }

    for (int i = 0; i < 5; i++)
        for (int j = 0; j < 12; j++)
            cout << a[i][j] << " ";
}

OUTPUT

NWLRB B MQBH CDARZ0WK K Y HID D Q SCDXRJ MOWFR XS JY BLD BEFSARCBYNECDY GGX NDORYBNJYS X WARALD P P Y H RDWQ H X WCIQNL DUICSJ BYLWBVFSZI X BY N Vx W BT TC I

I HAVE CREATED BETTER CODE IF YOU HAVE ANY ISSUE OR PROBLEM COMMENT IT DOWN

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