what is a recrusive function

[abcjayati]

hi! can you tell me what is a recrusive function? and what it does? and there are some lines in this small program that i could not understand (followed by???????) can u plz explain me those lines? plz

//Program to implement a Recursive Function
#include <iostream.h>
#include <string.h>
#include <stdlib.h>
#include <conio.h>
void recurfunc(int start,int stop,char* buff);
void main()
   {   clrscr();
    cout << "enter how many times to loop: ";
    char buff[100];
    cin >> buff;
    int num;
    num = atoi(buff);//??????what atoi function does?
    if(num >= 1)
    { recurfunc(0,num," this is a recursive function");  }
    else { cout << "sorry you didnt enter valid data" << endl;
        return;   } 
        getch();
    }
    void recurfunc(int start,int stop,char* buff) */ what is the use of start &stop variable in the program????????? /*
        {    if(start < stop)
                                   {                            start++;
                cout << "\n" << buff << "\n";
                recurfunc(start,stop,buff);
           }
            else
            {      return;   }
       }

[Motoma]

hi! can you tell me what is a recrusive function? and what it does? and there are some lines in this small program that i could not understand (followed by???????) can u plz explain me those lines? plz

//Program to implement a Recursive Function
#include <iostream.h>
#include <string.h>
#include <stdlib.h>
#include <conio.h>
void recurfunc(int start,int stop,char* buff);
void main()
{ clrscr();
cout << "enter how many times to loop: ";
char buff[100];
cin >> buff;
int num;
num = atoi(buff);//??????what atoi function does?
if(num >= 1)
{ recurfunc(0,num," this is a recursive function"); }
else { cout << "sorry you didnt enter valid data" << endl;
return; }
getch();
}
void recurfunc(int start,int stop,char* buff) */ what is the use of start &stop variable in the program????????? /*
{ if(start < stop)
{ start++;
cout << "\n" << buff << "\n";
recurfunc(start,stop,buff);
}
else
{ return; }
}

A recursive function is a function that calls itself before completing.
atoi() takes character representation of a number, and returns it as an integer.
The function will stop calling itself when it has start is equal to stop.

[RedSon]

This will tell you everything you need to know. And it is probably translated into your language if you use your local wikipedia wiki.

Wikipedia