reading from a file

[sh4k3]

ive made a simple program to read the number of characters entered from the standard input.

i was wondering if someone could help me tweak the program to read from a file instead of from the standard input.

help plz!

#include <stdio.h>
#include <string.h>

#define MAX_CHARS 20

int GetStr(char string[], int maxLen);

int main(void)
{	
	int stringLength;

	char string[MAX_CHARS + 1] = {'\0'}; 

	printf("Please enter a string:\n");

	stringLength = GetStr(string, MAX_CHARS);

	printf("Length of string is: %d\t",stringLength);


	return(0);
}

/*****************************************************************
//
//	GetStr Function definition	
//
//	This function reads a series of characters from the user until 
//	MAX_CHARS is reached.
//
/*****************************************************************/

int GetStr(char string[], int maxLen) 
{
	int i;
	for(i=0;i<maxLen;i++)
		{	
			string[i]=getchar();
			if((string[i]=='\n') || (string[i]==EOF))
				break;
		}

	string[i]='\0';

	return(i);

}

[MacGyver]

I would either redirect the program at the command line so stdin would be the file of your choice for input, or else I would rewrite GetStr() to take a FILE * and perform an fgetc() instead of a getchar(). Obviously the fgetc() could act on the file in question. Opening the file and such should be done in main().