Question

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() std::string sentence; std::getline(std::cin, sentence); // manipulate the sentence here std::cout << sentence << "\n"; }} Example input This is a totally normal sentence. Example output This is a totally normal sentence. Example input This shouldn't change a bit! Example output This shouldn't change a bit!

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";
}}

Answer 1

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Code:

#include <string>
#include <iostream>

int main()
{
std::string sentence;
std::getline(std::cin, sentence);
  
// manipulate the sentence here
int i = 0;
std::string space = " ";
std::string doublespace = space + space;

//find the position of the double space in the given string
i = sentence.find(doublespace);

//if no double space the return the sentence, if double space is present then replace it with single space
while (i > -1)
{
//replace the double space with single space
sentence.replace(i,2,space);

//again find the double space and continue till you replace all double spaces
i = sentence.find(doublespace);
}
  
std::cout << sentence << "\n";
return 0;
}

Screen shot of the code and Output:

main.cpp 1 #include <string> 2 #include <iostream> 4 int main() std::string sentence; std::getline(std::cin, sentence); // manipulate the sentence here int i = 0; //find the position of the double space in the given string i = sentence.find(""); //if no double space the return the sentence, if double space is present then replace it with single space while (i > -1) //replace the double space with single space sentence.replace(i,2," "); //again find the double space and continue till you replace all double spaces i = sentence.find(" "); std::cout << sentence << "\n"; return 0; 23 } 24. input sentence. This is a totally normal This is a totally normal sentence. ... Program finished with exit code 0 Press ENTER to exit console. I

This shouldn't change a bit! This shouldn't change a bit! ... Program finished with exit code o Press ENTER to exit console. I

main.cpp 1 #include <string> 2 #include <iostream> 4 int main() std::string sentence; std::getline(std::cin, sentence); // manipulate the sentence here int i = 0; //find the position of the double space in the given string i = sentence.find(""); //if no double space the return the sentence, if double space is present then replace it with single space while (i > -1) //replace the double space with single space sentence.replace(i,2," "); //again find the double space and continue till you replace all double spaces i = sentence.find(" "); std::cout << sentence << "\n"; return 0; 23 } 24. input sentence. This is a totally normal This is a totally normal sentence. ... Program finished with exit code 0 Press ENTER to exit console. I

This shouldn't change a bit! This shouldn't change a bit! ... Program finished with exit code o Press ENTER to exit console. I

main.cpp #include <string> #include <iostream> 2 int main) 5 f 4 std::string sentence; std::getline(std: :cin, sentence); // manipulate the sentence here int i 6 7 9 //find the position of the double space in the given string i 10 sentence.find ( " "); //if no double space the return the sentence, if doub le space is present then replace it wi th single space while (i -1) { //replace the double space with single space sentence.replace ( i , 2, " "); //again find the double space and continue till you replace all double spaces i 11 12 13 14 15 16 17 sentence.find ( " "); 18 19 20 std::cout < sentence < "\n"; 21 return 0; 22 23} 24 input This is a totally normal sentence. This is a totally normal sentence. ...Program finished with exit code 0 Press ENTER to exit console.I

This shouldn't change a bit! This shouldn't change a bit! |- ..Program finished with exit code o Press ENTER to exit console.