Question

A sample human input file that contains test values that a human would enter on the keyboard (covering both normal cases and boundary/error cases)

My code is to search the puzzle, read human_input.txt and then search the word

I have a problem with this line : while(fgets(humanchar, 1000, humanfile)),

searchfirst(array,height,width,"happy"); is search well but searchfirst(array,height,width,humanchar); is nothing happen

In addition, The input may contain upper and lower case characters, I try to convert it to lowercase, but i have a problem, so help me with it "you should convert them all to lower case when you read them."

And finally help me to reverse the word in each search

human_input.txt

search_puzzle.txt
happy
error
hope
exit

searchpuzzle.txt

10 7
ABCDEFt
SsGKLaN
OPpRcJW
PLDrJWO
ELKJiIJ
SLeOJnL
happyTg
BEoREEa
JFhSwen
ALSOEId

test.c

#include <stdio.h>
#include "functions.h"
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

int fileio()
{   FILE *humanfile;
    char humanchar[1000];
   FILE *ptr_file;
   char buf[1000];
   int height,width;
   char **array; //create double pointer array
   // open human_input file
   humanfile = fopen("human_input.txt", "r");
       if (!humanfile)
       {
            printf("File is not available \n");
       return 1;
       }
   char filename[10];
   // get a name of puzzle file
   fscanf(humanfile,"%s",filename);
   //open puzzle file
   ptr_file =fopen(filename,"r");
   if (!ptr_file){
       printf("File is not available \n");
       return 1;
   }
   fscanf(ptr_file,"%d %d",&height,&width); // get height and weight
   printf("%d ",height);
   printf("%d",width);
   printf("\n");
   //allocate array
   array = (char **)malloc(sizeof(char *)*height); // create the array size
   for(int i = 0; i<height;i++){
       array[i] = (char *)malloc(sizeof (char) * width);
   }  
  
   int col = 0, row;
   //get a single char into array
   for(row=0; row<height; row++){
       fscanf(ptr_file, "%s", buf);
       for (int i =0; i <= width;i++){
           if (buf[i] != '\0'){
               array[row][col] = buf[i];
               col++;
       }
       }
       col = 0;
   }

   // print array
   for (int i = 0; i < height; i++) {
       for (int j = 0; j < width; j++){
           printf("%c", array[i][j]);
       }
       printf("\n");
   }
       //close file

   //////////////////////test/////////////////////////////////////////
   //   searchfirst(array,height,width,"happy"); // find the letter
   //   searchfirst(array,height,width,"EId"); // find the letter
       //searchfirst(array,height,width,"tNW");
       //searchfirst(array,height,width,"RwI");
       //searchfirst(array,height,width,"Eed");
       //searchfirst(array,height,width,"PDJ");
      
       //searchfirst(array,height,width,"Ryn");
       //searchfirst(array,height,width,"OsC");
       //searchfirst(array,height,width,"Eea");
       //searchfirst(array,height,width,"LhRynJ");
   /////////////////////////////////////////////////////////////////////
  
   //get a single char into array
  
   // human input I have problem with this one
   while(fgets(humanchar, 1000, humanfile)) {
        // printf("%s\n", humanchar);
           searchfirst(array,height,width,humanchar);
   }
      

       free(array);
       fclose(humanfile);
       fclose(ptr_file);
   return 0;
}

void searchfirst(char **array,int height,int width,char str[]){
// go through array
   for (int i = 0; i < height; i++) {
       for (int j = 0; j < width; j++){
           if (array[i][j] == str[0]){ /// find the first letter in string
           //printf("\nfound %s\n",str);  
           findwordhorizontal(array,i,j,str); //find the word horizontal
           findwordvertical(array,i,j,height,str); // find the word vertical
           findworddiagonal1(array,i,j,height,width,str);
           findworddiagonal2(array,i,j,width,str);
       }  
       }  
   }
}

void findwordhorizontal(char **array,int m,int n,char str[]){

   char *buffer = (char *) malloc(sizeof(char)*(n));  
   int j = 0;
   while (str[j] != '\0'){
       buffer[j] = array[m][n+j]; // add string to buffer
       j++;
   }
   buffer[j] = '\0';//add \0 to ending of string buffer
   int result = strcmp (buffer,str); // comparing string
   if (result==0) // if 2 string equal
   {
       printf("Found the word horizontal %s\n", buffer);      
   }
   free(buffer);
  
}

void findwordvertical(char **array,int n,int m,int height,char str[]){

   char *buffer = (char *) malloc(sizeof(char)*(height ));  
   int j = 0;
   while (n<height){
       buffer[j] = array[n][m]; // add string to buffer
       buffer[j+1] = '\0';//add \0 to ending of string buffer
       int result = strcmp (buffer,str); // comparing string
       if (result==0) // if 2 string equal
       {
           printf("Found the word vertical %s\n", buffer);      
       }
       n++;
       j++;
  
   }
   free(buffer);
}

void findworddiagonal1(char **array,int n,int m,int height,int width,char str[]){
   int count;
   for (count = 0; str[count]; count++){
       // just count length of str
   }  
  
   int calculate1 = width - m; // width - current col
   int calculate2 = height -n; // height - current row
  
   if ( calculate1 >= count && calculate2 >= count){ // if current n m have enough length of str: start searching
       char *buffer = (char *) malloc(sizeof(char)*(calculate1));  
       int j = 0;
       while (j<count){
           buffer[j] = array[n][m]; // add string to buffer
           buffer[j+1] = '\0';//add \0 to ending of string buffer
           //printf("%s vs %s\n",buffer,str);
           int result = strcmp (buffer,str); // compa4 7ring string
           if (result==0) // if 2 string equal
           {
               printf("Found the word diagonal 1 %s\n", buffer);      
           }
           n++;
           m++;
           j++;  
   }
   }
  
}

void findworddiagonal2(char **array,int n,int m,int width,char str[]){
   int count;
   for (count = 0; str[count]; count++){
       // just count length of str
   }  
  
   int calculate1 = width - m; // width - current col
   int calculate2 = n+1; // height - current row
   //printf("%d %d %d\n",calculate1,calculate2,count);
   if ( calculate1 >= count && calculate2 >= count){ // if current n m have enough length of str: start searching
       char *buffer = (char *) malloc(sizeof(char)*(calculate1));  
       int j = 0;
       while (j<count){
           buffer[j] = array[n][m]; // add string to buffer
           buffer[j+1] = '\0';//add \0 to ending of string buffer
           //printf("%s vs %s\n",buffer,str);
           int result = strcmp (buffer,str); // comparing string
           if (result==0) // if 2 string equal
           {
               printf("Found the word diagonal 2 %s\n", buffer);      
           }
           n--;
           m++;
           j++;  
   }
   }
  
}
int main()
{
   fileio();
   return 0;
}

Answer 1

Program:

#include <stdio.h>
//#include "functions.h"
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

void searchfirst(char **array,int height,int width,char str[]);
void findwordhorizontal(char **array,int m,int n,char str[]);
void findwordvertical(char **array,int n,int m,int height,char str[]);
void findworddiagonal1(char **array,int n,int m,int height,int width,char str[]);
void findworddiagonal2(char **array,int n,int m,int width,char str[]);

int fileio()
{ FILE *humanfile;
char humanchar[1000];
FILE *ptr_file;
char buf[1000];
int height,width;
char **array; //create double pointer array
// open human_input file
humanfile = fopen("human_input.txt", "r");
if (!humanfile)
{
printf("File is not available \n");
return 1;
}
char filename[10];
// get a name of puzzle file
fscanf(humanfile,"%s",filename);
//open puzzle file
ptr_file =fopen(filename,"r");
if (!ptr_file){
printf("File is not available \n");
return 1;
}
fscanf(ptr_file,"%d%d",&height,&width); // get height and weight
printf("height = %d\n",height);
printf("width = %d\n",width);
printf("\n");
//allocate array
array = (char **)malloc(sizeof(char *)*height); // create the array size
for(int i = 0; i<height;i++){
array[i] = (char *)malloc(sizeof (char) * width);
}

int col = 0, row;
//get a single char into array
for(row=0; row<height; row++){
fscanf(ptr_file, "%s", buf);
for (int i =0; i <= width;i++){
if (buf[i] != '\0'){
if(buf[i]>='A' && buf[i]<='Z')
buf[i] = buf[i] + 32;
array[row][col] = buf[i];
col++;
}
}
col = 0;
}

// print array
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++){
printf("%c", array[i][j]);
}
printf("\n");
}
//close file

//////////////////////test/////////////////////////////////////////
/* searchfirst(array,height,width,"happy"); // find the letter
searchfirst(array,height,width,"EId"); // find the letter
searchfirst(array,height,width,"tNW");
searchfirst(array,height,width,"RwI");
searchfirst(array,height,width,"Eed");
searchfirst(array,height,width,"PDJ");

searchfirst(array,height,width,"Ryn");
searchfirst(array,height,width,"OsC");
searchfirst(array,height,width,"Eea");
searchfirst(array,height,width,"LhRynJ"); */
/////////////////////////////////////////////////////////////////////

//get a single char into array

// human input I have problem with this one
while(fscanf(humanfile, "%s", humanchar)!=EOF){
// printf("%s", humanchar);
searchfirst(array,height,width,humanchar);
}

free(array);
fclose(humanfile);
fclose(ptr_file);

return 0;
}

void searchfirst(char **array,int height,int width, char str[]){
// go through array
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++){
if (array[i][j] == str[0]){ /// find the first letter in string
//printf("\nfound %s\n",str);
findwordhorizontal(array,i,j,str); //find the word horizontal
findwordvertical(array,i,j,height,str); // find the word vertical
findworddiagonal1(array,i,j,height,width,str);
findworddiagonal2(array,i,j,width,str);
}
}
}
}

void findwordhorizontal(char **array,int m,int n,char str[]){

char *buffer = (char *) malloc(sizeof(char)*(n));
int j = 0;
while (str[j] != '\0'){
buffer[j] = array[m][n+j]; // add string to buffer
j++;
}
buffer[j] = '\0';//add \0 to ending of string buffer
int result = strcmp (buffer,str); // comparing string
if (result==0) // if 2 string equal
{
printf("Found the word horizontal %s\n", buffer);
}
free(buffer);

}

void findwordvertical(char **array,int n,int m,int height,char str[]){

char *buffer = (char *) malloc(sizeof(char)*(height ));
int j = 0;
while (n<height){
buffer[j] = array[n][m]; // add string to buffer
buffer[j+1] = '\0';//add \0 to ending of string buffer
int result = strcmp (buffer,str); // comparing string
if (result==0) // if 2 string equal
{
printf("Found the word vertical %s\n", buffer);
}
n++;
j++;

}
free(buffer);
}

void findworddiagonal1(char **array,int n,int m,int height,int width,char str[]){
int count;
for (count = 0; str[count]; count++){
// just count length of str
}

int calculate1 = width - m; // width - current col
int calculate2 = height -n; // height - current row

if ( calculate1 >= count && calculate2 >= count){ // if current n m have enough length of str: start searching
char *buffer = (char *) malloc(sizeof(char)*(calculate1));
int j = 0;
while (j<count){
buffer[j] = array[n][m]; // add string to buffer
buffer[j+1] = '\0';//add \0 to ending of string buffer
//printf("%s vs %s\n",buffer,str);
int result = strcmp (buffer,str); // compa4 7ring string
if (result==0) // if 2 string equal
{
printf("Found the word diagonal 1 %s\n", buffer);
}
n++;
m++;
j++;
}
}

}

void findworddiagonal2(char **array,int n,int m,int width,char str[]){
int count;
for (count = 0; str[count]; count++){
// just count length of str
}

int calculate1 = width - m; // width - current col
int calculate2 = n+1; // height - current row
//printf("%d %d %d\n",calculate1,calculate2,count);
if ( calculate1 >= count && calculate2 >= count){ // if current n m have enough length of str: start searching
char *buffer = (char *) malloc(sizeof(char)*(calculate1));
int j = 0;
while (j<count){
buffer[j] = array[n][m]; // add string to buffer
buffer[j+1] = '\0';//add \0 to ending of string buffer
//printf("%s vs %s\n",buffer,str);
int result = strcmp (buffer,str); // comparing string
if (result==0) // if 2 string equal
{
printf("Found the word diagonal 2 %s\n", buffer);
}
n--;
m++;
j++;
}
}

}
int main()
{
fileio();
return 0;
}

human_input.txt

search_puzzle.txt
happy
error
hope
exit
osc
eid
also

Output:

height = 10
width = 7

abcdeft
ssgklan
opprcjw
pldrjwo
elkjiij
sleojnl
happytg
beoreea
jfhswen
alsoeid
Found the word horizontal happy
Found the word diagonal 2 osc
Found the word horizontal eid
Found the word horizontal also

N.B. I have converted the input to lower case. I have modified human_input.txt and add some words, all of them work fine including the word "happy", but the other given words "error", "hope" and "exit" are not found. I think these words are not in the puzzle. I have also checked the puzzle but not get them. Whether you need help the share with me in the comment section.