Wsrtjtyk

First time posting on this forum, however not the first time surfing through it! Quite helpful threads, now I feel it's my time to ask for some help so thanks in advance for those who can help me out.

I have the following lines of code: which upon input reverses the order of the words.

i.e.
INPUT: Hello there I am Batman
OUTPUT: Batman am I there Hello

Now I would like to allow the user to be able to input multiple string i.e. ''Hello there I am Batman'' ; ''Hello World'' ; etc. These ideally while being inputted are seperated by a semi-colen and are parsed with it.

CODE:

#include <stdio.h>



/* function prototype for utility function to

reverse a string from begin to end */

/*Function to reverse words*/

void reverseWords(char* s)

{

    char* word_begin = NULL;

    char* temp = s; /* temp is for word boundry */



    /*STEP 1 of the above algorithm */

    while (*temp) {

        /*This condition is to make sure that the string start with

        valid character (not space) only*/

        if ((word_begin == NULL) && (*temp != ' ')) {

            word_begin = temp;

        }

        if (word_begin && ((*(temp + 1) == ' ') || (*(temp + 1) == ''))) {

            reverse(word_begin, temp);

            word_begin = NULL;

        }

        temp++;

    } /* End of while */



    /*STEP 2 of the above algorithm */

    reverse(s, temp - 1);

}





/* UTILITY FUNCTIONS */

/*Function to reverse any sequence starting with pointer

begin and ending with pointer end */

void reverse(char* begin, char* end)

{

    char temp;

    while (begin < end) {

        temp = *begin;

        *begin++ = *end;

        *end-- = temp;

    }

}



/*

int main( void )

{

    int i, n;

    printf("Enter no of strings:");

    scanf("%i", &n);

    char **str = (char **) malloc( n* sizeof(char*));



    for (i = 0; i < n; i++) {

        str[i] = (char*) malloc(100);

        fgets(str[i],100,stdin);

    }



    for (i = 0; i < n; i++) {

        printf("%s", str[i]);

    }



    for (i = 0;  i < n; i++) {

        free(str[i]);

    }

    free(str);

    return 0;

}

*/



/* Driver function to test above functions */

int main()

{



        char str[50];

        char* temp = str;

        printf("Enter a string : ");

        gets(str);

        reverseWords(str);

        printf("%s", str);

        return(0);



}

Using strtok as mentioned by one of the comments, you could do it that way:

void reverseSentence(char* sent){

    char *argv[25]; // This assumes you have a max of 25 words

    int  argc = 0;

    char* token = strtok(sent, " ");

    while (token != NULL) {

        argv[argc] = malloc(100); // This assumes each word is 99 characters at most

        strcpy(argv[argc++], token);

        token = strtok(NULL, " ");

    }



    for(int z = argc-1; z>=0; z--)

        fprintf(stdout, "%s ", argv[z]);



    fprintf(stdout, "n");



}

Warning! I did not test the code, so you may have few bugs there... like missing semi colons, variable names not matching, etc...