C++ assignment. Please help me to complete this code: #include <string> #include <iostream> using namespace std;...
C++ assignment. Please help me to complete this code:
#include <string>
#include <iostream>
using namespace std;
// Write your function here
//////////////// STUDENT TESTING ////////////////////
int run()
{
cout << "Student testing" << endl;
strip();
return 0;
}
Here is the instruction:
Write a filter function named strip that removes C++ comments from input, sending the uncommented portion of the program to output. Your program should work with both single line (//) comments, and multi-line (/* */) comments.
+ A "/*" sequence is ended by the first "*/" that is
encountered.
+ Comment characters inside string literals "don't count"
+ Strings quotes may be escaped using an escape character.
+ Single-line comments // may be included inside multi-line
comments
Because this is a filter, you program will read from cin and write
to cout.
Homework Answers
The program is implemented using two boolean variables "single" and "multi" which are used as flags and set to true when a comment is found in the input program.
The program works by taking the input (the source code that includes comments) in the string variable inp .The function strip() scans for the comment lines in the input.The relevant logic is set for ignoring the comment lines by finding whether the comment line is a single comment line or a multi line comment using the conditional logic to check for contiguous "//" symbols or "/*" with their corresponding closing symbols for single and multi line comments respectively.
If a comment is found,the comment line is skipped and the rest of statements will be storied in the output variable "res"(string datatype)
Execution:
The program prompts the user to provide the input(the program that inculdes comments) from the console.After the input is provided and enters a user-break character(Ctrl+D),the program provides the output by stripping all the comment lines from the output .
Source code:
commentstrip.cpp
#include <iostream>
using namespace std;
string strip(string inp)
{
int n = inp.length();
string res;
// Flag to to check existence of single comment line
bool single = false;
// Flag to to check existence of multi comment line
bool multi = false;
// scan the given input program code
for (int i=0; i<n; i++)
{
// If single line comment exists, then check for end of it
if (single == true && inp[i] == '\n')
single = false;
// If multiple line comment exists, then check for end of it
else if (multi == true && inp[i] == '*' && inp[i+1]
== '/')
multi = false, i++;
// Ignore comment characters inside string literals
else if (single || multi)
continue;
// Check for beginning of comments and setting the flags
else if (inp[i] == '/' && inp[i+1] == '/')
single = true, i++;
else if (inp[i] == '/' && inp[i+1] == '*')
multi = true, i++;
// If current character is a non-comment character, append it to
result
else res += inp[i];
}
return res;
}
int run(string inp)
{
cout << "\n Student testing" << endl;
cout << strip(inp);
}
// Driver program to test above functions
int main()
{
string inp,line;
cout<<"Enter the program to be stripped:"<<endl;
cout<<"Press Ctrl+D after providing the
input:"<<endl;
while (getline(cin, line))
{
if (line == "^D")
break;
inp += "\n"+line;
}
cout << "Given Program \n";
cout << inp << endl;
run(inp);
return 0;
}
Output screenshots
:
Add Answer to:
C++ assignment. Please help me to complete this
code:
#include <string>
#include <iostream>
using namespace std;...
Here is the beginning of the code; #include <string> #include <iostream> int main() { std::string sentence;...
Here is the beginning of the code;
#include <string>
#include <iostream>
int main()
{
std::string sentence;
std::getline(std::cin, sentence);
// manipulate the sentence here
std::cout << sentence << "\n";
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#include <iostream>
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{
private:
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int ID;
string firstName,lastName;
public:
Student(int ID,string firstName,string lastName)
//constructor
{
this->ID=ID;
this->firstName=firstName;
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}
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{
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}
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{
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using namespace std;
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{
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string s[index];
int flag = 1;
int choice;
while (flag)
{
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Here is the beginning of the code;
#include <string>
#include <iostream>
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{
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Lab 4.5.1 Text manipulation: duplicate white space Objectives Familiarize the student with: • the basics of string and text manipulation. Scenario Write a program that will read a line of text and remove all duplicate whitespace. Note that any single whitespace characters must remain intact. #include <string> #include <iostream> int main()...
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{
private:
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