Programming Forums > Application Development > C

novkhan · Apr 19th, 2006, 11:26 PM

Gooday

A real beginner of c. So hope to get some help.

here goes
If user key in "5"
create a file name "raw.txt"
prompt user to key in "A" or "B".
Example is "A" is selected. raw.txt inside must reflect "a"
if user then select "B"
raw.txt must reflect "b" on newline. :banana:

Prm753 · Apr 19th, 2006, 11:59 PM

This is not that hard. Use some if/else statements in your code for controlling user input.
Check this out for fputs();
http://irc.essex.ac.uk/www.iota-six....putc_fputs.asp

Please consider reading the "How to post a question" thread. Thank you.

nnxion · Apr 20th, 2006, 4:04 AM

@Prm753: Using gets, is a very bad idea.

@OP: Welcome to the forums, please read the "How to post a question" thread at the top of the C/C++ forum. A quick question: Why are you beginning with C instead of C++?
Anyway, here's some code, if you don't understand it read your man pages, manual or search for the functions on internet, you can find them here.
If you do want to use C++, you can find a tutorial here, the stuff on pointers isn't exactly good or accurate last time I checked, but you can find that in DaWei's profile.

(Toggle Plain Text)

#include <stdio.h>

int main()
{
	int i = 0, gotit = 0;
	char c = 0;
	FILE * fp;

	do
	{
		printf("Enter number 5: ");
		gotit = scanf ("%d", &i);
		rewind(stdin);
	}
	while((gotit != 1) || (i != 5));

	if((fp = fopen("raw.txt", "wb")) == NULL)
	{
		fprintf(stderr, "Cannot create/open file\n");
		return 1;
	}

	do
	{
		printf("Enter 'A' or 'B' (capital letters): ");
		gotit = scanf ("%c", &c);
		rewind(stdin);
	}
	while((gotit != 1) || ((c != 'A') && (c != 'B')));

	if(c == 'A')
		fputs("a", fp);
	else
		fputs("b", fp);

	return 0;
}

novkhan · Apr 20th, 2006, 4:15 AM

Hey NNIXON REAL THANKS
i still have the last part. Hope you can you help.
Big Thankyou!!!!!!

PART A (You have solved!) :banana:
If user key in "5"
create a file name "raw.txt"
prompt user to select "A" or "B".
Example is "A" is selected. raw.txt inside must reflect "a"
if user then select "B"
raw.txt must reflect "b" on newline.

PART B (Hope you could help! Thanks)

now we have either "a\n, b\n" or "b\n,a\n" in raw.txt
compare with "match.txt"
In "match.txt" it will indicate rules. If "a\n, b\n" print "Apple Pie" or "b\n, a\n" print "Chicken Pie"
print the results

novkhan · Apr 20th, 2006, 4:21 AM

By the way I am learning C. not C++...

InfoGeek · Apr 20th, 2006, 5:18 AM

Is it some homework assignment?

nnxion · Apr 20th, 2006, 5:29 AM

Quote:

Originally Posted by novkhan

By the way I am learning C. not C++...

Yeah you told us, but WHY?

Why not C++? C is OLD. :p

You can read the file. (Hint: use fscanf or fgets.)

DaWei · Apr 20th, 2006, 7:27 AM

Quote:

C is OLD. :p

Bite me, Ruben, C is young....

OpenLoop · Apr 20th, 2006, 7:02 PM

Quote:

Originally Posted by DaWei

Bite me, Ruben, C is young....

My boss suddenly have a crush on PL/I. Three poor sools from the shop were chosen to learn it from a book. His point was that PL/I is better than what we use now(COBOL). I have to agree with him, PL/I is newer than COBOL. It was introduced in 1960, COBOL in 1959.
Did I mention he is 66+ years old. I'm sure PL/I was pretty fly when he was in college.

Apr 19th, 2006, 11:26 PM	#1
novkhan Newbie Join Date: Apr 2006 Posts: 3 Rep Power: 0	simple fputs question. Gooday A real beginner of c. So hope to get some help. here goes If user key in "5" create a file name "raw.txt" prompt user to key in "A" or "B". Example is "A" is selected. raw.txt inside must reflect "a" if user then select "B" raw.txt must reflect "b" on newline. :banana:

Apr 19th, 2006, 11:59 PM	#2
Prm753 Professional Programmer Join Date: Oct 2005 Location: United States Posts: 447 Rep Power: 4	This is not that hard. Use some if/else statements in your code for controlling user input. Check this out for fputs(); http://irc.essex.ac.uk/www.iota-six....putc_fputs.asp Please consider reading the "How to post a question" thread. Thank you. __________________ The world's first athletic computer geek! The home of PrProgramsStudios How not to post a question: <-- Please don't reply

Apr 20th, 2006, 4:04 AM	#3
nnxion Programming Guru Join Date: Jun 2005 Location: elemental plane Posts: 1,429 Rep Power: 5	@Prm753: Using gets, is a very bad idea. @OP: Welcome to the forums, please read the "How to post a question" thread at the top of the C/C++ forum. A quick question: Why are you beginning with C instead of C++? Anyway, here's some code, if you don't understand it read your man pages, manual or search for the functions on internet, you can find them here. If you do want to use C++, you can find a tutorial here, the stuff on pointers isn't exactly good or accurate last time I checked, but you can find that in DaWei's profile. (Toggle Plain Text) #include <stdio.h> int main() { int i = 0, gotit = 0; char c = 0; FILE * fp; do { printf("Enter number 5: "); gotit = scanf ("%d", &i); rewind(stdin); } while((gotit != 1) \|\| (i != 5)); if((fp = fopen("raw.txt", "wb")) == NULL) { fprintf(stderr, "Cannot create/open file\n"); return 1; } do { printf("Enter 'A' or 'B' (capital letters): "); gotit = scanf ("%c", &c); rewind(stdin); } while((gotit != 1) \|\| ((c != 'A') && (c != 'B'))); if(c == 'A') fputs("a", fp); else fputs("b", fp); return 0; } #include <stdio.h> int main() { int i = 0, gotit = 0; char c = 0; FILE * fp; do { printf("Enter number 5: "); gotit = scanf ("%d", &i); rewind(stdin); } while((gotit != 1) \|\| (i != 5)); if((fp = fopen("raw.txt", "wb")) == NULL) { fprintf(stderr, "Cannot create/open file\n"); return 1; } do { printf("Enter 'A' or 'B' (capital letters): "); gotit = scanf ("%c", &c); rewind(stdin); } while((gotit != 1) \|\| ((c != 'A') && (c != 'B'))); if(c == 'A') fputs("a", fp); else fputs("b", fp); return 0; } __________________ "Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for." -- Socrates

Apr 20th, 2006, 4:15 AM	#4
novkhan Newbie Join Date: Apr 2006 Posts: 3 Rep Power: 0	Nnixonnnnnn................... Hey NNIXON REAL THANKS i still have the last part. Hope you can you help. Big Thankyou!!!!!! PART A (You have solved!) :banana: If user key in "5" create a file name "raw.txt" prompt user to select "A" or "B". Example is "A" is selected. raw.txt inside must reflect "a" if user then select "B" raw.txt must reflect "b" on newline. PART B (Hope you could help! Thanks) now we have either "a\n, b\n" or "b\n,a\n" in raw.txt compare with "match.txt" In "match.txt" it will indicate rules. If "a\n, b\n" print "Apple Pie" or "b\n, a\n" print "Chicken Pie" print the results

Apr 20th, 2006, 5:18 AM	#6
InfoGeek Professional Programmer Join Date: Jun 2005 Location: India, The great. Posts: 435 Rep Power: 4	Is it some homework assignment? __________________ PFO - My daily dose of technology.

Apr 20th, 2006, 4:21 AM	#5
novkhan Newbie Join Date: Apr 2006 Posts: 3 Rep Power: 0	By the way I am learning C. not C++...

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Programming Forums > Application Development > C

simple fputs question.