csv file visualization program [closed] - c

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I would like to write a program that will open a csv file and create its visualization in a txt file.
I mean:
input:
(this is csv file)
apple;orange;strawberry
car;warsaw;ansi
output in txt file
apple|orange|strawberry
car |warsaw| ansi
The idea is that the width of the whole column should be adjusted to the longest expression in it
output in my program
apple|orange|strawberry
|car|warsaw|ansi
|
I have too many separators, and they're not in line
My code:
#include <stdio.h>
#include <string.h>
#include <string.h>
#define MAXLINE 1000
int how_many_delimiter(char array[]);
int main(void)
{
FILE *f,*f_2;
int *size_of_column, counter, hmd, min;
char corrector[] = ";", rows[MAXLINE], *clipboard;
f = fopen("ex-5.csv", "r");
f_2 = fopen("wynik.txt", "w");
fgets(rows, MAXLINE, f);
hmd = how_many_delimiter(rows);
size_of_column = (int*)calloc(hmd,sizeof(int));
min=10;
while(fgets(rows, MAXLINE, f))
{
clipboard = strtok(rows, corrector);
counter=0;
if(strlen(clipboard)>size_of_column[counter])
{
size_of_column[counter] = strlen(clipboard);
}
while(clipboard!=NULL)
{
if(strlen(clipboard)>size_of_column[counter])
{
size_of_column[counter] = strlen(clipboard);
}
clipboard = strtok(NULL,corrector);
counter++;
}
}
fclose(f);
f = fopen("ex-5.csv", "r");
while(fgets(rows, MAXLINE, f))
{
clipboard = strtok(rows, corrector);
counter=0;
while(clipboard!=NULL)
{
fprintf(f_2,"%-*s|",size_of_column[counter], clipboard);
clipboard = strtok(NULL,corrector);
counter++;
}
}
fclose(f);
fclose(f_2);
return 0;
}
int how_many_delimiter(char array[])
{
int counter, i;
i = 0;
counter = 1;
while(array[i]!='\n'&& array[i]!=EOF)
{
if(array[i]==';') counter++;
i++;
}
return counter;
}

Answer 1

Steps to do this (using an alternate to the "%*s", width method):
Loop to get length of longest word in all categories
int len = strlen(longestWord);
Create format string container char formatStr[80];
Populate formatStr: sprintf(formatStr, "%s%d%s", "%", len+5, "s");
+5 is arbitrary, change as needed for space between columns.
Use formatStr in the printf() statements for each word.
So for example the longest word shown in your example is strawberry. My suggestion was to programmatically parse all of the words into buffers, and loop on them, performing strlen() on each to determine longest. Once you've found, in this case, strawberry, len will be 10, so the format specifier would be "%15s" (if you use my recommended +5). But the value 15 will be in an int variable by then (say for example int longest. Since inserting it directly into the normal format string: ( "%longests" ) will not compile, it will need to be packaged up into a format string, formatStr as shown in bullets above, and here:
sprintf(formatStr, "%s%d%s", "%", longest + 5, "s|");
( Will look like: "%s15s|" )
Once this is done, you can use the format string in the printf statements
This then:
fprintf(f_2,"%-*s|",size_of_column[counter], clipboard);
Becomes:
fprintf(f_2,formatStr, clipboard);
(either method will work.)