(5/5)

Question 1 (Lecture 1): Write a program to read all the characters (at most 1000) from an input file named: a.txt. The program should replace every space character by the last character.

For example if the content of the input file is:

So far the variables we had in our programs were simple variables. There are other kinds of

variables and are called structured variables.

Array variables are of this kind@

The output should be:

So@far@the@variables@we@had@in@our@programs

were@simple@variables.@There@are@other@kinds@of

variables@and@are@called@structured@variables.

Array@variables@are@of@this@kind@

Answer:

Question 2 (Lecture 2): Write a parallel program using the sequent simulator (sequent.h) to accomplish the same as the following serial program. For the following serial program the user enters a line of text, and the program outputs the number of occurrences of each character.

For the parallel program if we have n threads we should divide the line into n segments (and not into n characters) and let each thread counts the characters of its segment.

Note: If you get error with respect to shared memory enter the following on the prompt:

ipcrm -a

For more information on this command enter: man ipcrm.

The following is the sequential (serial) of this question.

//File name: a.c

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#define ASCIIs 127 //ASCII characters from 0 to 127

#define atmost 1000

char letters[atmost + 1]; //Extra location for the string terminator '\0'

int count[ASCIIs];

int main(){

int i, index;

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

count[i] = 0;

printf("Enter a line not larger than 100 characters.\n");

gets(letters); //Read a line into array letters. This function adds '\0' to the end of the string

for(i = 0; i < strlen(letters); i++){

index = (int)letters[i];

(count[index])++;

}

for(i = 33; i < ASCIIs; i++)

if(count[i] != 0)

printf("Number of %c is: %d\n", i, count[i]);

return 0;

}

For example:

Enter a line not larger than 100 characters.

for(i = 0; i < strlen(letters); i++){

Number of ( is: 2

Number of ) is: 2

Number of + is: 2

Number of 0 is: 1

Number of ; is: 2

Number of < is: 1

Number of = is: 1

Number of e is: 3

Number of f is: 1

Number of i is: 3

Number of l is: 2

Number of n is: 1

Number of o is: 1

Number of r is: 3

Number of s is: 2

Number of t is: 3

Number of { is: 1

The boldfaced line is what the user entered.

(5/5)

DescriptionIn this final assignment, the students will demonstrate their ability to apply two ma

Path finding involves finding a path from A to B. Typically we want the path to have certain properties,such as being the shortest or to avoid going t

Develop a program to emulate a purchase transaction at a retail store. Thisprogram will have two classes, a LineItem class and a Transaction class. Th

1 Project 1 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of

1 Project 2 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of