Question

C programming language only!

a file is given that has comma-separated integers. the files contents are -1,-9,1,45,3,2,1,-1...

Create a function that takes as an input a filename and returns an array containing the list of integers in the file

Answer 1

C code:

#include <stdio.h>
#include <stdlib.h> // For exit()

char * display(char fname[])
{
FILE *fileptr;
char c,arr[100];
int i=0;
fileptr = fopen(fname, "r");
   if (fileptr == NULL)
   {
       printf("Cannot open file \n");
       exit(0);
   }
   c = fgetc(fileptr);
   while (c != EOF)
   {
       arr[i++] = c;
       printf("%c",arr[i-1]);
       c = fgetc(fileptr);
   }
fclose(fileptr);
return arr;
}
int main()
{

char fname[100];
printf("Enter the fname to open \n");
   scanf("%s", fname);
   char *a=display(fname);
   return 0;
}
Execution screenshots: