C Programme reading character by character into strings [closed] - c

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Basically what I'm doing is reading in a random text file, removing the punctuation and arranging the words into a linked list.
Everything works fine using this
printf("%c", (*(buf+x)));
so for example, the text file has the following
"they're their where ever we may go go,"
the correct out put is printed
theyre
their
where
ever
we
may
go
go
My problem is, how do I convert these into strings and store them in an array?

Answer 1

I'm assuming you want to reuse buf, so you want to copy the words into separately allocated storage. If you terminate each word in buf with a null byte prior to copying it, i.e. '\0', then you can use strdup to copy it. You can later free the space with free. Add the following includes (the second is for free):
#include <string.h>
#include <stdlib.h>
Here's a simple example:
buf[0] = 'a';
buf[1] = 'b';
buf[2] = 'c';
buf[3] = '\0';
str = strdup(buf);

Answer 2

I assume you want to store the words from the file in an array and print them.
you can try the following:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main(void)
{
char *buf[40];
for (int n = 0; n < 40; n++)
{
buf[n] = (char*)malloc(20 * sizeof(char));
}
FILE *file;
fopen_s(&file, "file.txt", "r");
int c, i = 0, j = 0;
bool init = 0;
while ((c = getc(file)) != EOF)
{
if (c != ' ')
{
buf[i][j] = c;
j++;
init = 1;
}
else
{
if (init)
{
buf[i][j] = '\0';
i++;
j = 0, init = 0;
}
}
}
buf[i][j] = '\0';
for (int x = 0; x <= i; x++)
{
printf("word[%d] : %s\n", x, buf[x]);
}
for (int x = 0; x < 40; x++)
{
free(buf[x]);
}
fclose(file);
return 0;
}

Answer 3

Try this code to understand better concept :
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main(void)
{
char c;
int i = 0, count = 0,max = 0;
FILE *fp;
fp = fopen("file.txt", "r");
if(fp == 0)
{
printf("File is not opened\n");
return;
}
else
{
// Finding line having maximum characters from the file to allocate that much memory..
while ((c = getc(fp)) != EOF)
{
count++;
if(c == '\n')
{
if(count > max)
max = count;
count = 0;
}
else
{
count = 0;
}
}
}
rewind(fp);
// Allocating the memory up to max line from the file.
char *temp = (char*)malloc(max * sizeof(char));
while ((c = getc(fp)) != EOF)
{
if ((c >= 'a' && c<='z') || (c >= 'A' && c <= 'z'))
{
temp[i++] = c;
}
else if(c == ' ' || c == '\n')
{
temp[i] = '\0';
printf("%s\n",temp);
i = 0;
memset(temp,'\0',max);
}
}
free(temp);
fclose(fp);
return 0;
}