Question

C++

/* Write code for void function display_vector that accepts parameter const reference vector of strings. The function will iterate through the vector and display a string per line. */

Write code for void function update_vector_element that accepts parameter reference vector of strings, a string vector search_value, and a string replace_value. The function will iterate through the vector and search for the search_value and if found will replace the vector element with the replace_value. */

Write code to create a vector of string names, add the values "John", "Mary", "Patty",

"Sam" to the vector, call the function display_vector and pass the names vector as

an argument, prompt user for a name to search for and a value to replace searched value with.

Afterward, call the update_vector_element with the names vector and call the display_vector function.

Don't worry about displaying a message for values that aren't found. Assume user will give you a valid name.

Answer 1

Following is the C++14 code.

#include <bits/stdc++.h>

using namespace std;

void display_vector(const vector<string> & sv)
{
vector<string>::const_iterator it;
  
for (it = sv.begin(); it != sv.end(); ++it) {
cout << " " << *it;
}
  
cout << endl;
}

void update_vector( vector<string> & sv, string search, string replace)
{
vector<string>::iterator it;
  
for (it = sv.begin(); it != sv.end(); ++it) {
if ( *it == search) {
*it = replace;
break;
}
}
  
}
int main()
{

vector<string> names;
  
names.push_back("John");
names.push_back("Mary");
names.push_back("Patty");
names.push_back("Sam");
  
display_vector(names);
  
string ss, rs;
cout << "Enter the search string : " ;
cin >> ss;
cout << "Enter the replace string : ";
cin >> rs;
  
update_vector(names, ss, rs);
display_vector(names);
  
return 0;
}

Output of program execution:

John Mary Patty Sam
Enter the search string : Patty
Enter the replace string : Peter
John Mary Peter Sam