Thread: Reverse a string (without using any string functions?)

Hi

Slowly learning C and currently making a program that takes a string (sentence) and does these following steps:

1)Print total of characters
2)Print total of e's
3)Reverse the words
4)Reverse the words and letters

Steps 1 and 2 are done; having a little halt with 3 and 4.

Let's take "Hello everyone" as the string.


CODE:

Code:

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i, totalCharacter, totalE;
    char txt[301];
  
  // Ask user to enter his/her sentence
  printf("Type your sentence: ");
  gets(txt);
    
  // 1) Total characters in the sentence (spaces included)
  for(totalCharacter = 0; totalCharacter < txt[totalCharacter]; totalCharacter++);
      printf("Your sentence has %i characteres (including any spaces).\n\n", totalCharacter);
      
  // 2) Total e's in the sentence
  totalE = 0;
  for(i = 0; i < totalCharacter; i++){
  if(txt[i] == 'e')
  totalE++;}
  printf("There are %i 'e' in your sentence.\n\n", totalE);
  
  // 3) Sentence with words reversed (INCOMPLETED!)
  for(i = 0; i < totalCharacter; i++)
  
  
  
  // 4) Sentence with letters AND words reversed (INCOMPLETED!)
  for(i = 0; i < totalCharacter; i++)

  
  system("PAUSE");	
  return 0;
}

So, step 1 gives: 14 characters
#2: 4 e's
#3: everyone hello
#4: enoyreve olleh

My question is: can I print out steps 3 and 4 without using any string functions? I'd like to use printf and 'for' loop only, if possible.

e.g. Something like this algorithm (:

1) Set up a counter to find the string length.
2) Find the last character and print it.
3) Decrement the counter and print the next successive characters.

Thanks in advance.