Sponsored Content
Full Discussion: String reverse
Top Forums Programming String reverse Post 302494861 by jim mcnamara on Tuesday 8th of February 2011 04:44:23 PM
Old 02-08-2011
Ancient version from Knuth:
Code:
char *
strrev(char *src)
{
   char *p=src;
   char *q=strchr(src,'\0');
   for(q--; q>p; q--,p++)
   {
      char tmp=*q;
      *q=*p;
      *p=tmp;
   }
   return src;
}

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

string in reverse

Can we print any string in reverse order? For example: oracle 16294 1 0 Aug 11 ? 0:00 ora_reco_crepd oracle 16276 1 0 Aug 11 ? 0:19 ora_dbw0_crepd I need second last column from this output. (0:00 & 0:19). I can use awk print $2 after reversing the string. ... (4 Replies)
Discussion started by: malaymaru
4 Replies

2. Shell Programming and Scripting

reverse string manipulation

How to get the reverse parsing work. I have a strings like aqw-wef-324-err.log wefd-324r-err.log efrt-4rfr.log . . i want to have string upto last hypen. aqw-wef-324 wefd-324r ... (1 Reply)
Discussion started by: senthilk615
1 Replies

3. Filesystems, Disks and Memory

shell program to reverse the string

pls help me in getting that program (1 Reply)
Discussion started by: saikiran
1 Replies

4. Shell Programming and Scripting

PerL Reverse the string.

Hi, I am very new to perl. My question: How i can reverse the given string using substr function but without using reverse function in perl? Anybody please help. thanks, -Lalit (3 Replies)
Discussion started by: email-lalit
3 Replies

5. Shell Programming and Scripting

reverse a string based on else

I have a file like this: Dog Cat One ABCDEFGHIJ house Dog Cat Two ABCDEFGHIJ house Cat Cat One ABCDEFGHIJ house Cat Cat Two ABCDEFGHIJ house I want to look at $3 and if it says "Two" print out the line except reverse $4. Dog Cat One ABCDEFGHIJ house Dog Cat Two JIHGFEDCBA house ... (3 Replies)
Discussion started by: dcfargo
3 Replies

6. Shell Programming and Scripting

reverse string matching

Guys, I am trying to find a way to achieve this. I need to print /usr/local/apche/htdocs only from the string /usr/local/apache/htdocs/file.php using the regex. The below did not work. I know a solution with normal cut, I need a way to do this with the awk regex. awk '/+file.php/' (6 Replies)
Discussion started by: anilcliff
6 Replies

7. Shell Programming and Scripting

Reverse of a string

Hi All, I have a String str="Manish". I would like to reverse it. I know the option to do this in bash is: echo "Manish" | rev but I have seen an alternate solution somewhere, which states that: str="Manish" echo $str | awk '{ for(i=length($0);i>=1;i--) printf("%s",substr($0,i,1));... (7 Replies)
Discussion started by: manishdivs
7 Replies

8. Shell Programming and Scripting

To reverse a string

Hi All, I would like to know , how to reverse a given string example : Hi how are you Required Output: you are how HiThanks (7 Replies)
Discussion started by: santhoshks
7 Replies

9. Shell Programming and Scripting

awk reverse string

Hello, Can anyone explain for me in this script to reverse the string? 1) the "x=x" part, how it works? $ echo welcome | awk '{ for(i=length;i!=0;i--)x=x substr($0,i,1);}END{print x}' $ emoclew2) x seems to be an array at the END, but can it automatically print the whole array in awk? Thanks... (8 Replies)
Discussion started by: yifangt
8 Replies

10. UNIX for Dummies Questions & Answers

How to cut part of a string in reverse?

Hi, how to cut part of a string sing delimiter in reverse input file 1,2,st-pa-tr-01,2,3,4, 2,3,ff-ht-05,6,7,8 how can i obtain strings till st-pa-tr ff-ht i.e cutting the last part og string -01 and -05 Thanks & Regards Nivi edit by bakunin: changed thread title (typo) (3 Replies)
Discussion started by: nivI
3 Replies
STRING(3)						   BSD Library Functions Manual 						 STRING(3)

NAME
stpcpy, strcat, strncat, strchr, strrchr, strcmp, strncmp, strcasecmp, strncasecmp, strcpy, strncpy, strerror, strlen, strpbrk, strsep, strspn, strcspn, strstr, strtok, index, rindex -- string specific functions LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <string.h> char * stpcpy(char *dst, const char *src); char * strcat(char *s, const char * append); char * strncat(char *s, const char *append, size_t count); char * strchr(const char *s, int c); char * strrchr(const char *s, int c); int strcmp(const char *s1, const char *s2); int strncmp(const char *s1, const char *s2, size_t count); int strcasecmp(const char *s1, const char *s2); int strncasecmp(const char *s1, const char *s2, size_t count); char * strcpy(char *dst, const char *src); char * strncpy(char *dst, const char *src, size_t count); char * strerror(int errno); size_t strlen(const char *s); char * strpbrk(const char *s, const char *charset); char * strsep(char **stringp, const char *delim); size_t strspn(const char *s, const char *charset); size_t strcspn(const char *s, const char *charset); char * strstr(const char *big, const char *little); char * strtok(char *s, const char *delim); char * index(const char *s, int c); char * rindex(const char *s, int c); DESCRIPTION
The string functions manipulate strings terminated by a null byte. See the specific manual pages for more information. For manipulating variable length generic objects as byte strings (without the null byte check), see bstring(3). Except as noted in their specific manual pages, the string functions do not test the destination for size limitations. SEE ALSO
bstring(3), index(3), rindex(3), stpcpy(3), strcasecmp(3), strcat(3), strchr(3), strcmp(3), strcpy(3), strcspn(3), strerror(3), strlen(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3) STANDARDS
The strcat(), strncat(), strchr(), strrchr(), strcmp(), strncmp(), strcpy(), strncpy(), strerror(), strlen(), strpbrk(), strspn(), strcspn(), strstr(), and strtok() functions conform to ISO/IEC 9899:1990 (``ISO C90''). BSD
December 11, 1993 BSD
All times are GMT -4. The time now is 06:55 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy