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2 years ago

Compare the strengths and limitations of modern computer programming languages.

Computers and Technology

1 answer:

DENIUS [597]2 years ago

7 0

The strengths and limitations of modern computer programming languages.

It make use of a translation free.
It has has High speed.
It is Machine dependent.
It is Hard to learn, etc.

<h3>What are the limitations of programming languages?</h3>

A C programming language is one which cannot be able to detect errors for all the line of coding.

Note that it tends to check the bugs after the total coding is done. It is one that do not need to show the namespace property. C programming is one that is said to possess an insufficient level that can be used for data abstraction.

Hence, The strengths and limitations of modern computer programming languages.

It make use of a translation free.
It has has High speed.
It is Machine dependent.
It is Hard to learn, etc.

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Answer:

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Explanation:

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4 years ago

There is a simple method for constructing a magic square for any odd value of n:

DaniilM [7]

Answer:

See Explaination

Explanation:

class MagicSquare():

def __init__(self,side):

self.side=side

self.two_dimension=[]

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for col in range(1,side+1):

row_line.append(0)

self.two_dimension.append(row_line)

def display(self):

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col=int((self.side-1)/2)

for i in range(1,self.side**2+1):

self.two_dimension[row][col]=i

row-=1

col+=1

if row==-1:

row=self.side-1

if col==self.side:

col=0

if self.two_dimension[row][col]==0:

continue

else:

row+=1

if row==self.side:

row==0

for line in self.two_dimension:

for num in line:

print("{0:>3}".format(num),end=" ")

print()

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print("----------------------------------------------------")

if __name__ == '__main__':

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3 0

4 years ago

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Answer:

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3 years ago

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lisabon 2012 [21]

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4 years ago

Create a program which will input data into a pipe one character at a time. Count the number of characters as they are written i

LenKa [72]

Answer:

#include<stdio.h>

#include<stdlib.h>

#include<fcntl.h>

#include<unistd.h>

#define BUFSIZE 16

int main(){

//pipe descriptors

char msg[BUFSIZE];

char buf[BUFSIZE];

int pipefd[2];

if(pipe(pipefd) == -1){

//pipe creation error

perror("pipe");

exit(EXIT_FAILURE);

}

//pipe creation successfull

//write four messages

sprintf(msg , "apple");

write(pipefd[1], msg, BUFSIZE);

printf("Written %s\n", msg);

sprintf(msg , "boy");

write(pipefd[1], msg, BUFSIZE);

printf("Written %s\n", msg);

sprintf(msg , "cat");

write(pipefd[1], msg, BUFSIZE);

printf("Written %s\n", msg);

sprintf(msg , "dog");

write(pipefd[1], msg, BUFSIZE);

printf("Written %s\n", msg);

//read

read(pipefd[0], buf, BUFSIZE);

printf("Read: %s\n", buf);

read(pipefd[0], buf, BUFSIZE);

printf("Read: %s\n", buf);

read(pipefd[0], buf, BUFSIZE);

printf("Read: %s\n", buf);

read(pipefd[0], buf, BUFSIZE);

printf("Read: %s\n", buf);

close(pipefd[0]);

close(pipefd[1]);

return 0;

}

(b)

#include<stdio.h>

#include<stdlib.h>

#include<fcntl.h>

#include<unistd.h>

#include<wait.h>

#define BUFSIZE 16

int main(){

//pipe descriptors

char msg[BUFSIZE];

char buf[BUFSIZE];

int pipefd[2];

if(pipe(pipefd) == -1){

//pipe creation error

perror("pipe");

exit(EXIT_FAILURE);

}

//pipe creation successfull

//write four messages

if(fork() == 0){

//this is child

//close unused write end

close(pipefd[1]);

read(pipefd[0], buf, BUFSIZE);

printf("This is child process reading first message. Content is %s\n", buf);

read(pipefd[0], buf, BUFSIZE);

printf("This is child process reading second message. Content is %s\n", buf);

read(pipefd[0], buf, BUFSIZE);

printf("This is child process reading third message. Content is %s\n", buf);

read(pipefd[0], buf, BUFSIZE);

printf("This is child process reading fourth message. Content is %s\n", buf);

close(pipefd[0]);

//exit from child

exit(EXIT_SUCCESS);

}

//this is parent process

//close unused read end

close(pipefd[0]);

sprintf(msg , "apple");

printf("This is parent process. Writing first message into pipe\n");

write(pipefd[1], msg, BUFSIZE);

sprintf(msg , "boy");

printf("This is parent process. Writing second message into pipe\n");

write(pipefd[1], msg, BUFSIZE);

sprintf(msg , "cat");

printf("This is parent process. Writing third message into pipe\n");

write(pipefd[1], msg, BUFSIZE);

sprintf(msg , "dog");

printf("This is parent process. Writing fourth message into pipe\n");

write(pipefd[1], msg, BUFSIZE);

close(pipefd[1]);

//wait for child

wait(NULL);

return 0;

}

(c)

#include<stdio.h>

#include<stdlib.h>

#include<fcntl.h>

#include<unistd.h>

#include<sys/wait.h>

#include<sys/types.h>

#include<signal.h>

typedef struct sigaction Sigaction;

unsigned long long size = 0;

void alarmhandler(int sig){

//alarm fired writing blocked

printf("Write blocked after %llu characters\n", size);

exit(EXIT_SUCCESS);

}

int main(){

//pipe descriptors

int pipefd[2];

if(pipe(pipefd) == -1){

//pipe creation error

perror("pipe");

exit(EXIT_FAILURE);

}

//install handler

sigset_t mask , prev;

sigemptyset(&mask);

sigaddset(&mask , SIGALRM);

sigprocmask(SIG_BLOCK , &mask , &prev);

Sigaction new_action;

sigemptyset(&new_action.sa_mask);

new_action.sa_flags = SA_RESTART;

new_action.sa_handler = alarmhandler;

sigaction(SIGALRM , &new_action , NULL);

sigprocmask(SIG_SETMASK , &prev, NULL);

while(1){

//print size on multiple of 4

if(size != 0 && size % 1024 == 0){

printf("%llu characters in pipe\n", size);

}

//reset previous alarm

alarm(0);

//set new alarm for 5 seconds

alarm(5);

//write to pipe one character

write(pipefd[1], "A", sizeof(char));

size++;

}

return 0;

}

Explanation:

Output for a, b, c are pasted accordingly

4 0

3 years ago