Question

How to store a sentence of strings into a vector container with push_back until I enter and type "quit"? string str: vector < int > v: if (str != "quit") {//use push_back to store str to vector} BUILD 3 LOOPS TO DISPLAY THE USER DEFINED STRING SENTENCE WITH THE CONDITIONS: to print out the strings using a for loop with begin and end & differencing iterator pointer. In another loop using the C++11 auto keyword to simplify the declaration of the iterator To print the contents of the vector in reverse order using rbegin and rend.

Answer 1

please find below the required code for above problem:

#include<iostream>

#include<vector>

#include<string>

using namespace std;

int main()

{

vector<string> vec;

//gettingthe user input and putting them into vector

cout<<"Enter string when done enter quit in new line\n";

while(true)

{

string str;

getline(cin,str);

if(str=="quit")

break;

else

vec.push_back(str);

}

//using defferent ieratrors printing the string

cout<<"\n\nPrinting vector string using begin iterator\n";

for(vector<string>::const_iterator i = vec.begin(); i != vec.end(); ++i) {

cout << *i << "\n";

}

cout<<"\n\nPrinting vector string using auto iterator\n";

for(auto i : vec) {

cout << i << " \n";

}

cout<<"\n\nPrinting vector string in reverse order using rbegin and rend\n";

for (vector<string>::reverse_iterator i = vec.rbegin(); i != vec.rend(); ++i ) {

cout << *i << "\n";

}

}

OUTPUT

Please do let me know if u have any doubts