How to read specific column from a file ?

[subhash1990]

I have a .txt file which contains 121 lines,now I want to read the no 20 columns from that file.How to read it.I have tried the following code.

my c.txt file look like following :

A B C D E.....AAA

 
#include<stdio.h>
#include "conio.h"
#include "string.h"
 
 
int main()
{
    FILE *fp;
 
    char a2[500];
    int i=0;
 
    fp=fopen("c.txt","r");
 
    if(fp==NULL)
    {
    printf("\nNot Exists\n");
    exit(1);
    }
 
 
for(i=0;i<=19;i++)
 
       {
    fscanf(fp,"%c",a2[i]);
    printf("%c ",a2[i]);
    }
 
        fclose(fp);
        return 0;
}
 
 
 
 
 
 

[donbock]

I suggest you read the file a line at a time. For each line, extract the desired columns. You can work on these two pieces separately:

• Read a file a line at a time: write code that reads a line and then prints it out. This part is working when the print-out looks like the original file.
• Extract the desired columns: parse a hard-coded text line defined inside your code (don't read any files). This part is working when you have correctly extracted the columns.