I am currently writing a project in C#, the only header file we could include is

Question

I am currently writing a project in C#, the only header file we could include is stdio.h.

This project is only about reading different files and process the information.

To start this project I have no idea how to receive inputs from different files,

On the project discription he mentioned after our file has been compiled, we coukld use the command:

projectFile.x < something.input

But i still do not understand what should i do if i want to use scanf() and feof() what should i write to receive the proper input?

** this program is able to receive files with different files w/ different names

Explanation / Answer

//This simple example shows how input redirection from file works. In your case reading from a file given as below

./a.out < sample.txt

I have writter program to show that.

//main file

#include <stdio.h>

int main()
{
  
int arr[100];
int count,i;
  
while(scanf("%d",&arr[count])!=EOF)
{
count++;
}
//print integeres read from file
printf("Array elements: ");
for(i = 0; i < count; i++)
{
printf("%d ",arr[i]);
}
printf(" ");
return 0;
}

-------------------------------------------------------------

I have file called sample.txt with following data

1 2 3 4 5
6 7 8 9 10

------------------------------------------

//now I want my program to read from sample.txt file into array and display the content of file.

To do that , first compile the program, I have named my C file as main.c u can give whatever name you have given to your C.

$gcc main.c

Which gives the a.out , now run as below, note $ is command prompt

$./a.out < sample.txt

//output after executing above command is

Array elements: 1 2 3 4 5 6 7 8 9 10

-------------------------------------

you can just use scanf for input file redirection. It reads from file instad of standard input. Hope it helps

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