Inserting a new line feed within a character array - c++

Question

I want to insert a new line feed within an array such that if the string length of my array increases beyond say 14 here the further contents of the array when displayed are displayed in a new line in the output console. Foe e.g Here in below program I want to Display "mein hoon don" in first line and after these 14 characters. I want to DISPLAY next content "Don Don Don" in a new line in output console. I read that using \0xa(hexa) and \10 in decimal are newline feed . But When i tried to use them in my code , I was not able to produce desired output.
# include <iostream.h>
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
int main()
{
char abc[40];
strcpy(abc,"mein hoon don.");
abc[15]='\10';
abc[16]='\0';
strcat(abc,"Don Don Don");
cout << "value of abc is " << abc;
getchar();
}

Answer 1

Change:
abc[15] = '\10';
abc[16] = '\0';
to:
abc[14] = '\n';
abc[15] = '\0';

Answer 2

The escape sequence \10 does not do what you think it does. It is probably easiest to use \n instead.
Note: you could also use strcat to insert the newline and prevent any index calculation problems:
strcpy(abc,"mein hoon don.");
/* abc[15]='\10'; */
/* abc[16]='\0'; */
strcat(abc, "\n");
strcat(abc,"Don Don Don");
You are really better off using std::string instead of char arrays:
#include <iostream>
#include <string>
int main() {
std::string s;
s = "mein hoon don.";
s += "\n";
s += "Don Don Don";
std::cout << value of abc is " << s << std::endl;
return 0;
}

Answer 3

Well, the escape secuence depends on the operating system you are working: there are two caracters \r (carrier return) and \n (line feed), in windows, you need both, in linux, you need only \r and in Mac, you need \n.
but, as long as you are using cpp, you shouldnt use any of them, you should use endln instead:
//# include <stdio.h>
//# include <stdlib.h>
//# include <string.h>
#include <ostream>
#include <iostream>
#include <sstream>
#include <string>
int main()
{
//char abc[40];
std::ostringstream auxStr;
auxStr << "mein hoon don." << std::endl << "Don Don Don" << std::endl;
//if you need a string, then:
//std::string abc = auxStr.str();
std::cout << "value of abc is " << auxStr.str();
getchar();
}

Answer 4

This code introduces a line break condition at position x.
Just set Line_Break=14; and you are done.
# include <iostream.h>
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
int main()
{
int LinePos=0;
int Line_Break_Pos=0;
int Line_Break=10;
char abc[40]={""};
strcpy(abc,"mein hoon don. ");
strcat(abc,"Don Don Don");
cout << "\n" ;
cout << "Without linebreak : \n";
cout << abc ;
cout << "\n\n" ;
cout << "With linebreak : \n" ;
while (LinePos < strlen(abc) )
{
cout <<abc[LinePos];
if (Line_Break_Pos > Line_Break && abc[LinePos ]==' ')
{
cout << "\n" ;
Line_Break_Pos=0;
}
LinePos++;
Line_Break_Pos++;
}
cout << "\n\n" ;
return 0;
}