//This is a very intresting function. It shows just how awesome pointers are in C I'm going to first use buffer as a pointer to the orignial word[],this way I don't have to overwrite the entire word[] each time I move on to add the null terminator for each word. Then I search the string word[] via the buffer pointer for a space and store this location as a pointer c. Next I replace the location in memory pointed to by c with \0 which will allow me to use my strdup to crawl the array, we'll get to that in a minute. Finnaly I increment the numwords to keep an accurate count for the random number generation and move the pointer buffer to one past the location where the I just added a null termintor, allowing me to start over and do it all over again!int add_nulls(char words[]){ int *c; //pointer for strchr int numwords = 0; //Holds the number of words in the array char *buffer; //This points to the next word to process int i; buffer = words; //Sets the pointer to the start of words[] while (c = strchr(buffer,' ')) //Find a space in words, return a pointer to that location { //For testing for(i = 0; i < 50 ; i++) { printf("%d ",words[i]); } printf("\n********************************\n"); //End for testing *c = '\0'; //Make the location pointed to a null terminator buffer = c + 1; //Move buffer up to the next space, so I'm in a new word numwords++; //Incriment the total number of words } return numwords; //If no more spaces then we're done}