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Full Discussion: C Recursion (explain)
Top Forums Programming C Recursion (explain) Post 302416310 by seede on Monday 26th of April 2010 05:22:24 AM
Old 04-26-2010
C Recursion (explain)
Hi,

Question: how come the output is like that? Can explain to me abit. I am learning C.

Thanks!

Code:
#include <stdio.h>
#include <string.h>
void printit(char line_of_char[], int index);
int main()
{
char line_of_char[80];
int index = -1;
 strcpy(line_of_char, "This is a string.");
 printit(line_of_char, index);
 return 0;
}
void printit(char line_of_char[], int index)
{
 if(line_of_char[index])
 {
  index++;
  printf("+%c", line_of_char[index]); /*how come this is not being printed after "-" was printed*/
  printit(line_of_char, index);
  printf("-%c", line_of_char[index]);
 }
}
// Output is:
//+T+h+i+s+ +i+s+ +a+ +s+t+r+i+n+g+.+ - -.-g-n-i-r-t-s- -a- -s-i- -s-i-h-T

Last edited by seede; 04-26-2010 at 06:35 AM..
 

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LEARN ABOUT CENTOS

zip_get_name

ZIP_GET_NAME(3) 					     Library Functions Manual						   ZIP_GET_NAME(3)

NAME

       zip_get_name - get name of file by index

LIBRARY

       libzip (-lzip)

SYNOPSIS

       #include <zip.h>

       const char * zip_get_name(struct zip *archive, int index, int flags);

DESCRIPTION

       The  zip_get_name  function  returns  the name of the file at position index in archive.  If flags is set to ZIP_FL_UNCHANGED, the original
       unchanged filename is returned.	The returned string must not be modified or freed, and becomes invalid when archive is closed.

RETURN VALUES

       Upon successful completion, a pointer to the name is returned.  Otherwise, NULL and the error code in archive is set to indicate the error.

ERRORS

       zip_get_name fails if:

	      [ZIP_ER_DELETED]
		  index refers to a file that has been deleted (see zip_delete(3) ).

	      [ZIP_ER_INVAL]
		  index is not a valid file index in archive, or index points to an added file and ZIP_FL_UNCHANGED is set.

SEE ALSO

       libzip(3), zip_name_locate(3)

AUTHORS

       Dieter Baron <dillo@giga.or.at> and Thomas Klausner <tk@giga.or.at>

NiH								 January 20, 2005						   ZIP_GET_NAME(3)
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