Question

C Programming

How do you read in a text file line by line into a an array.

example, i have the text file containing:

line 1: "qwertyuiop"

line 2: "asdfghjkl"

line 3: "zxcvbnm"

Then in the resulting array i get this:

array:"qwertyuiopasdfghjklzxcvbnm"

Answer 1

//C program for gcc (GCC) 9.3.0 and above

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int main()
{
   FILE *fp = fopen("input.txt","r");
   char *line = NULL;
    size_t len = 0;
    ssize_t read;
   if(fp==NULL)
   {
       printf("Error Opening File!!");
   }
   int i;
   char *arr = (char *)malloc(sizeof(char)*5000);
   while ((read = getline(&line, &len, fp)) != -1) {
       strcat(arr, line);
    }
    printf("%s",arr);
}