/**

 * C program to reverse order of words in a string

 */

 

#include <stdio.h>

#include <string.h>

 

int main()

{

    char string[100], reverse[100];

    int len, i, index, wordStart, wordEnd;

 

    printf(“Enter any string: “);

    gets(string);

 

    len   = strlen(string);

    index = 0;

 

    // Start checking of words from the end of string

    wordStart = len – 1;

    wordEnd  = len – 1;

 

    while(wordStart > 0)

    {

        // If a word is found

        if(string[wordStart] == ‘ ‘)

        {

            // Add the word to the reverse string

            i = wordStart + 1;

            while(i <= wordEnd)

            {

                reverse[index] = string[i];

 

                i++;

                index++;

            }

            reverse[index++] = ‘ ‘;

 

            wordEnd = wordStart – 1;

        }

 

        wordStart–;

    }

 

    // Finally add the last word

    for(i=0; i<=wordEnd; i++)

    {

        reverse[index] = string[i];

        index++;

    }

    reverse[index] = ‘’; // Adds a NULL character at the end of string

 

    printf(“Original string n%snn”, string);

    printf(“Reverse ordered words n%s”, reverse);

 

 

    return 0;

}