Thread: writing backwards?

Hey guys i have homework and i need seriously help, i dont know exactly writing programs need your help

question is Wtire a C program that will enter a line of text, store it in an array and then write it out backwards. Allow the length of the line not exceed 80 characters.

We don't do homework. We provide help in fixing your homework, or guiding you along the way. Right now you should provide us with some code you have written for this, or what your ideas are concerning it.

Originally Posted by Overworked_PhD

Wow, I'm slipping. Someone beat me to the response quicker than I could write the code -(. Anyways, maybe something like the following...

Code:

#include <stdio.h>

#define MAXLINE 80

/*Rookie way to reverse a string*/
void reverse(char s[])
{
  int i, j;
  char temp;

  i = 0;
  while (s[i] != '\0')
    ++i;
  --i;
  if (s[i] == '\n')
    --i;
  j = 0;
  while (j < i) {
    temp = s[j];
    s[j] = s[i];
    s[i] = temp;
    --i;
    ++j;
  }
}

int getline(char s[], int max)
{
  int c, i;
  for (i = 0 ;i < max -1 && (c = getchar()) != EOF && c != '\n'; i++) 
    s[i] = c;
  if (c == '\n') {
    s[i++] = c;
  }
  s[i] = '\0';
  return i;
}

int main(void)
{
  char line[MAXLINE];

  while (getline(line, MAXLINE) > 0) {
    reverse(line);
    printf("%s\n", line);
  }

  return 0;
}

[cd@localhost oakland]$ gcc -Wall -Wextra -Wshadow -ansi -pedantic easy.c -o easy
[cd@localhost oakland]$ ./easy
sex
xes

drugs
sgurd

chicks
skcihc

lalalalaliesoedosnomeosnffffffffffffffffffffffffff ffffffffffffffffffffffilolndodsmsoetssssssssssssss sssssssssssssssssssssssssssssssssssssssssiiiiiiii
odnlolifffffffffffffffffffffffffffffffffffffffffff fffffnsoemonsodeoseilalalalal
iiiiiiiissssssssssssssssssssssssssssssssssssssssss sssssssssssssteosmsd

maybe
ebyam

[cd@localhost oakland]$

Back for more violation of forum rules and unnecessary trolling I see.

Nah, I'm just proving that I can run circles around you when it comes to basic programing -).

Besides, no one on here should be do *any* kind of programming for a living if this exercise took them more than 5 minutes to do.

Originally Posted by Overworked_PhD

Nah, I'm just proving that I can run circles around you when it comes to basic programing -).

Haha. Sure keep comforting yourself with that.

Ya know, anytime you want to meet me face to face for some kind of programming showdown, I'll be more than happy to show up and clown you like the rookie you are. Maybe we could get MK27 or tabstop to issue the programming problems. Then, in real life, without the aid of google or any other resource, we can go at it -).

Originally Posted by Overworked_PhD

Ya know, anytime you want to meet me face to face for some kind of programming showdown, I'll be more than happy to show up and clown you like the rookie you are. Maybe we could get MK27 or tabstop to issue the programming problems. Then, in real life, without the aid of google or any other resource, we can go at it -).

Yeah right, like I have the kind of time you have to go around 'competing' in programming with strangers on the Internet. ROFL. I did that when I was in college, you should have tried that too. I am going to stop responding to your useless trolling in respect for the OP whose thread is being clogged with nonsense.

Pssst... The late Dr. W. Richard Stevens, authors of the books "Advance Programming in the Unix Environment" and the Unix Network Programming books used to roam the halls of comp.lang.c. Another notable alumni of comp.lang.c is ANSI/ISO C committee member P.J. Plauger.

Heh. Nice name dropping. I can do that too. Dennis Ritchie. Brian Kernighan. Ken Thompson. Doug McIlroy. Bjarne Stroustrup. Wow, I feel smarter already.

Originally Posted by kermit

Heh. Nice name dropping. I can do that too. Dennis Ritchie. Brian Kernighan. Ken Thompson. Doug McIlroy. Bjarne Stroustrup. Wow, I feel smarter already.

I have copies of e-mail correspondences between me and Dr. Ritchie. Also, I wouldn't mention these names unless I had some kind of active communication between them on comp.lang.c