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posted by  Bullboy8 on 11/6/2009 6:52:02 PM  |  status: Closed  |  Earned Karma: 25

getString function

Course Textbook Chapter Problem Needs by
Software Design Starting Out with C++: From Control Structures Through Objects (6th) by Gaddis 9 5PC 11/13/2009 at 1:00:00 PM
Question Details:
Write a function named "getString" that has a local char array of 80 elements.  The function should ask the user to enter a sentence, and store the sentence in the array.  Then the function should dynamically allocate a char array just large enough to hold the sentence, plus the null terminator.  It should copy the sentence to the dynamilcally allocated array, and then return a pointer to the array.  Demonstrate the function in a complete program.
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Oracle
Karma Points: 31,807
posted by rapunzel on 11/6/2009 7:51:20 PM  |  status: Live
Asker's Rating: Lifesaver   
Response Details:
please rate - thanks

#include <iostream>
#include <cstring>
using namespace std;
char *getString();
int len(char *);
void copy(char *,char *);

int main()
{ char *str;
  str=getString();
  cout << "The string you entered is: "<<str<< endl;
  system("pause");
   return 0;
}


char *getString()
{  int n=80,l;
   char *p,s[n];
   cout<<"Enter a string: ";
   cin.getline(s,n);
   l=len(s);
   p=new char[l+1];
   copy(p,s);
   return p;
}

int len(char *s)
{ int i=0;  // To hold the number of characters
   
   while(*s!= '\0')
   {i++;
    s++;    
   }
  return i;
}

void copy(char *s1, char *s2)
{int i=0;
 while (*(s2+i)!='\0')
   {*(s1+i)=*(s2+i);
      i++;
   }
*(s1+i)='\0';
}
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