C++ How can I add a space between the two strings? #include <iostream> #include

Question

C++

How can I add a space between the two strings?

#include <iostream>

#include <cctype>

#include <cstring>

using namespace std;

int main()

{

string str1, str2;

cout << "String 1: " << endl;

cin >> str1;

char * cstr1 = new char [str1.length()+1];

char * Newstring1 = new char [str1.length()+1];

strcpy (cstr1, str1.c_str());

strcpy(Newstring1, cstr1);

cout << "String 2: " << endl;

cin >> str2;

char * cstr2 = new char [str2.length()+1];

char * Newstring2 = new char [str2.length() + 1];

strcpy(cstr2, str2.c_str());

strcpy(Newstring2, cstr2);

cout << strcat(Newstring1, Newstring2) << endl;

char * cstr3 = new char [str1.length() + str2.length() + 1];

int i;

for(i = 0; i < (str1.length() + str2.length()); i++)

if(i < str1.length())

cstr3[i] = str1[i];

else

cstr3[i] = str2[i-str1.length()];

cstr3[i] = '';

cout<<cstr3<<endl;

}

Explanation / Answer

#include <iostream>
#include <cctype>
#include <cstring>

using namespace std;
int main()
{
string str1, str2;
  
cout << "String 1: " << endl;
cin >> str1;
  
char * cstr1 = new char [str1.length()+1];
char * Newstring1 = new char [str1.length()+1];
strcpy (cstr1, str1.c_str());
  
strcpy(Newstring1, cstr1);

cout << "String 2: " << endl;
cin >> str2;
  
char * cstr2 = new char [str2.length()+1];
char * Newstring2 = new char [str2.length() + 1];
strcpy(cstr2, str2.c_str());
strcpy(Newstring2, cstr2);
  
cout << strcat(Newstring1, Newstring2) << endl;

char * cstr3 = new char [str1.length() + str2.length() + 1];

int i;
for(i = 0; i < (str1.length() + str2.length()+1); i++)

if(i < str1.length())
cstr3[i] = str1[i];
else
{
   if(i==str1.length())
   {
       cstr3[i]=" ";
       i++;
   }
   cstr3[i] = str2[i-str1.length()];
}
cstr3[i] = '';

cout<<cstr3<<endl;
}

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