Thread: file loading problem which i think may be caused by my switch statement

Code:

#include <stdio.h>
#include <stdlib.h>


#define optionlist "*************\n\n1. Preorder\n2. Inorder\n3. Postorder\n4. Update\n5. Load\n6. Save\n7. Help\n8. Quit\n\n**************\n"



void load();

FILE *infile;

int main(int argc, char *argv[])
{
	int option, readin, test=0;
	
	
	if (argc == 2)
	{
		printf("The file you have opened reads: \n");
		infile =fopen(argv[1], "r");

		test = 1;
		while((readin = fgetc(infile)) != EOF)
		{
			printf("%c", readin);
		}
	}

	printf("\n\n");
	printf(optionlist);
	scanf("%d", &option);
	while (option < 1 || option > 8)
	{
		system("cls");
		printf(optionlist);
		scanf("%d", &option);
	}

	switch (option)
	{
	case 5:
		load();
		break;	
	case 8:
		if (test=0 )
		{
			fclose(infile);
		}
		break;
	}
	return 0;
}

 
void load()
{
	int readin;
	char filename[13];

	system("cls");
	printf("Enter the name of the file to be loaded: ");
	gets(filename);

	infile = fopen(filename, "r");

	while (infile == NULL)
	{
		system("cls");
		printf("Check for existance of the file.\nTry entering an existing file.\nEnter the name of the file to be loaded: \n");
	}
	printf("The file you have opened reads: \n");

	while((readin = fgetc(infile)) != EOF)
	{
		printf("%c", readin);
	}
}

i think the problem may be caused in the switch statement but no idea how? the function called load is trying to load a text file read in by the user.. however my program is seemingly skipping over the gets(filename); bit, it gives me an error.. although it says 0 errors in the compile and build.

thanks for your time.

EDIT: after performing some testing.. it doesn't have anything to do with the switch statement.. i'm still working on it.. i'll let u know if i find anything out.. but it aint looking so hot..

EDIT2: after more testin.. it seems as though its got something to do with being in a function.

Code:

#include <stdio.h>

int main()
{
	FILE *infile;
	char filename[13];
	int readin;

	printf("\nEnter a file name: ");
	gets(filename);

	infile = fopen(filename, "r");

		while((readin = fgetc(infile)) != EOF)
		{
			printf("%c", readin);
		}


	return 0;
}

this works, but when i cut the stuff from this into a function it doesn't work.. i don't really understand..
PLEASE help
cheers guys.

FINAL EDIT: i worked it out. i needed to use scanf instead of gets. i don't really understand why that fixed it? but it did.
maybe an explanation could help me?

i understood the diff between gets and scanf was that gets excepted spaces and ended at a newline, where scanf read a space or newline as the end?