I need help with my program in C , the problem and source code are below. Please

Question

I need help with my program in C, the problem and source code are below. Please do not change the source code, only add to it.

Problem

People with speaking disabilities and limited mobility, such as famed physicist Stephen Hawking, often use speech synthesizers controlled by a simple input device. In this lab, we will write a tool that allows the user to generate sentences of text using the DualShock 4 as input. This could then feed a speech synthesizer program.

The skeleton code takes a filename as a command line argument. The file will contain a list of up to 100 words, one per line. Each word will not exceed 10 characters. Your code should present the words in five columns (“%15s” perhaps) on the screen. To do this, you use the mvprintw function from the ncurses library like you did in DS4Maze. Do not use printf. It doesn’t play nicely with ncurses. More information about using mvprintw can be found in the development tips at the end of this lab.

Develop an input method so that a user can select one of the displayed words using the DualShock 4. You would be wise to use the joystick. Its values are found using the -j flag

./ds4rd.exe -d 054c:05c4 -D DS4_BT -t -b -j -bt

You should indicate the word currently selected by placing a character next to it using the draw char function used in DS4Maze.

Begin with an empty sentence at the bottom of the screen.

The TRIANGLE button will append a space to the current sentence followed by the selected word.

The X button will remove the last item (a word, punctuation, or letter) added. You need to be able to use the remove feature multiple times in a row. Think of it as an “undo” button in software you use on a daily basis. The X button also needs to remove everything in the last command (including spaces).

The SQUARE button will append the word but without adding a space.

The CIRCLE button will capitalize the first letter of the next word appended.

Update the current sentence at the bottom of the screen as words are added and deleted. The sentence can be limited to 80 characters.

A new sentence can be started by pressing down on the joystick. This should clear the bottom line of the screen.

Source Code

Explanation / Answer

Answer:

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#define MAXWORDS 100
#define WORDLEN 11
#define DEBUG 0   // set to 0 to disable debug output

int readWords(char *wl[MAXWORDS], char* filename); // reads words from the file
// into wl and trims the whitespace off of the end

//modifies s to trim white space off the right side
void trimws(char* s) ;

// PRE: 0 < x < WIDTH, 0 < y < HEIGHT, 0 < use < 255
// POST: Draws character use to the screen and position x,y
void draw_character(int x, int y, char use);

int main(int argc, char* argv[]) {
        char* wordlist[MAXWORDS];
        int wordCount;
        int i;
        wordCount = readWords(wordlist, argv[1]);

        if (DEBUG)
       {
            printf("Read %d words from %s ",wordCount, argv[1]);
            for (i = 0; i< wordCount; i++) {
                printf("%s,", wordlist[i]);

            }
            printf(" ");
        }

   //start ncurses
   initscr();
    refresh();
  
   //build the word table
   int xVal = 0, yVal = 0;
   for(i = 0; i < wordCount; i++)
   {
       mvprintw(yVal, xVal, " %s", wordlist[i]);
       refresh();
       xVal += 15;
       if(xVal >= 75)
       {
           yVal++;
           xVal = 0;
       }  
   }

   //calculate row count
   int rowCount = wordCount / 5;
   if(wordCount%rowCount != 0 ) rowCount ++;
  
   //start loop
   int time, joyDown, joyUp, joyLeft, joyRight, joy5, joy6;
   int b1, b2, b3, b4, b5, b6;
   int curX = 0, curY = 0;
   int prevX = 0, prevY = 0;
   int moveTime = 0;
   int lengthOfLast = 0;
   int lengthOfSentance = 0;
   int capitalizeNext = 0;
  
   do
   {
      
       //get joystick values and assign joyX and joyY
       scanf("%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d",
               &time, &b1, &b2, &b3, &b4, &b5, &b6, &joyDown, &joyUp, &joyLeft, &joyRight, &joy5, &joy6);
       //mvprintw(20,0,"%d", b5); // debug
      
       if(time - moveTime < 300)
       {
           //too soon, wait
           continue;
       }
      
       //delete previous cursor
       draw_character(prevX, prevY, ' ');
      
       //reassign the curX and curY accordingly
       if(joyDown && curY < rowCount-1)
       {
           curY++;
       }
       else if(joyUp && curY>0)
       {
           curY--;
       }
      
       if(joyRight && curX < 60)  
       {
           curX+=15;
       }
       else if(joyLeft && curX > 0)
       {
           curX-=15;
       }
      
       // new cursor position
       moveTime = time;// capture for delay
      
       prevX = curX;
       prevY = curY;
      
       //draw new cursor
       draw_character(curX, curY, '-');
      
       // see if user wishes to select and select

       if(b2)// add selected with space
       {
           int indexToUse = curY*5 + curX/15;
           lengthOfLast = strlen(wordlist[indexToUse])+1;
          
           char toAdd[12];
           strcpy(toAdd, wordlist[indexToUse]);
           if(capitalizeNext)
           {
               toAdd[0] -= 0x20;
           }
           mvprintw(rowCount+2, lengthOfSentance," %s", toAdd);
           lengthOfSentance += lengthOfLast;
       }
       else if(b3) // add selected without space
       {
           int indexToUse = curY*5 + curX/15;
           lengthOfLast = strlen(wordlist[indexToUse]);
           char toAdd[12];
           strcpy(toAdd, wordlist[indexToUse]);
           if(capitalizeNext)
           {
               toAdd[0] -= 0x20;
           }
           mvprintw(rowCount+2, lengthOfSentance,"%s", toAdd);
           lengthOfSentance += lengthOfLast;
       }
       else if(b4) // add selected with capitalized first letter
       {
           if(capitalizeNext)
           {
               capitalizeNext = 0;
               mvprintw(rowCount+1, 0,"    ");
           }
           else
           {
               capitalizeNext = 1;
               mvprintw(rowCount+1, 0,"CAP");
           }
          
       }
       else if(b1) // delete last added
       {
           int indexToUse = curY*5 + curX/15;
           lengthOfSentance -= lengthOfLast;
           mvprintw(rowCount+2,lengthOfSentance,"              "); // debug
          
       }
      
   }
   while(1);
   endwin();

}

void trimws(char* s) {
        int len = strlen(s) ;
        int x;
        if (len ==0) return;
        x = len-1;
        while (isspace(s[x]) && (x>=0)) {
                s[x] = '';
                x--;
                }
}

int readWords(char* wl[MAXWORDS], char* filename) {
        int numread =0;
        char line[WORDLEN];
        char *p;
        FILE* fp = fopen(filename,"r");
        while (!feof(fp)) {
                p =fgets(line, WORDLEN, fp);
                if (!feof(fp) && p !=NULL) {
                        trimws(line);
                        wl[numread] = (char *) malloc(strlen(line)+1);
                        strcpy(wl[numread], line);
                        numread++;
                        }
                }
    fclose(fp);
    return numread;
}

// PRE: 0 < x < WIDTH, 0 < y < HEIGHT, 0 < use < 255
// POST: Draws character use to the screen and position x,y
//THIS CODE FUNCTIONS FOR PLACING THE AVATAR AS PROVIDED.
//YOU DO NOT NEED TO CHANGE THIS FUNCTION.
void draw_character(int x, int y, char use)
{
        mvaddch(y,x,use);  
        refresh();
}

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