scanf with strings... please help


 
Thread Tools Search this Thread
Top Forums Programming scanf with strings... please help
# 1  
Old 05-25-2005
Question scanf with strings... please help

hi i am a beginner to C

i have encountered a problem with my assignment, and i have researched it on the internet, but unfortunately i didn't find anything related to that.

i am writing a simple program that takes user's input by prompt command, and parse the whole line into an array of strings by spaces between. the part i don't understand is, how to detect the end of the line.
here is my code
Code:
int *parameter[10];
int i = 0;
while(!0 && i < 10)             {
           scanf("%s", &parameter[i]);
           if(!EOF) 
           break;
           printf("parameter is %s\n", &parameter[i]);
           i++;
}

if i type in this in prompt command
word1 word2 word3

here is the program's output
string is word1
string is word2
string is word3
when the program reaches here, it freezes, it cannot seem to detect it is the end of user's input

any help is greatly appreciated. Smilie

Last edited by inkfish; 05-25-2005 at 05:40 PM..
# 2  
Old 05-25-2005
From our rules:
(6) Do not post classroom or homework problems.

But I'll give a few hints before I close this thread.

EOF is a constant, often set to -1. Your "if(!EOF)" is waiting for -1 to become 0. You might check the return code from scanf to see it that is EOF. (But then your program is checking for when the user types cntl-D.)
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

How to pass strings from a list of strings from another file and create multiple files?

Hello Everyone , Iam a newbie to shell programming and iam reaching out if anyone can help in this :- I have two files 1) Insert.txt 2) partition_list.txt insert.txt looks like this :- insert into emp1 partition (partition_name) (a1, b2, c4, s6, d8) select a1, b2, c4, (2 Replies)
Discussion started by: nubie2linux
2 Replies

2. Programming

Scanf() string pointer problem

I have a problem with scanf() for string pointer as member of a struct. #include <stdio.h> #include <stdlib.h> struct Student { int studentNumber; int phoneNumber; char *studentName; //line 7 // char studentName; //line 8 }; int... (10 Replies)
Discussion started by: yifangt
10 Replies

3. Shell Programming and Scripting

Passing argument 1 of 'scanf' makes po

$ cc Array.c Array.c: In function ‘main’: Array.c:23: warning: passing argument 1 of ‘scanf’ makes po Array.c:25: error: expected expression before ‘return’ Array.c:29: error: expected expression before ‘return’ Array.c: At top level: Array.c:44: error: expected ‘)’ before ‘&’ token... (8 Replies)
Discussion started by: sgradywhite
8 Replies

4. Programming

What is the difference between printf and putchar() or scanf and getchar() ?

Im a newbie to programming language, i found tat there r these function called printf and putchar() as well as scanf and getchar(), im curious abt why do dey hav these 2 different function although dey r doing the same instruction? :confused: (13 Replies)
Discussion started by: kris26
13 Replies

5. Shell Programming and Scripting

Delete lines in file containing duplicate strings, keeping longer strings

The question is not as simple as the title... I have a file, it looks like this <string name="string1">RZ-LED</string> <string name="string2">2.0</string> <string name="string2">Version 2.0</string> <string name="string3">BP</string> I would like to check for duplicate entries of... (11 Replies)
Discussion started by: raidzero
11 Replies

6. Programming

Better than scanf

I don't know how to do this: printf("creazione nuovo messaggio\n"); printf("insert dest\n"); scanf("%s",dest); printf("insert object\n"); scanf("%s",ogg); printf("inserire text\n"); scanf("%s",test); ... (7 Replies)
Discussion started by: italian_boy
7 Replies

7. Programming

simple scanf issue ?

Hello everyone, I hope someone is awake to help me on this.. hey How can I do something like this: The user is asked is asked to enter an int value, but I want to provide a default value on stdout, which they can back space and change it to whatever they want.. for e.g: Enter the... (4 Replies)
Discussion started by: the_learner
4 Replies

8. Programming

problem with scanf

hi all! i've written a simple c program: #include<stdio.h> #include<stdlib.h> int main() { int a; char b; char c; ... (4 Replies)
Discussion started by: mridula
4 Replies

9. Programming

scanf doesn´t reads spaces ???

hi all i have a program in C (Unix Solaris 5.7) and i want to read a string from keyboard, but the "scanf" doesn´t reads spaces. example: .... char name; .... printf("Enter your name: "); scanf("%s",&name); printf ("Your name is: %s", name); and if i write Kevin Costner ... (4 Replies)
Discussion started by: DebianJ
4 Replies

10. Programming

Scanf problem under LINUX...

I have a problem reading characters from keyboard with the scanf function. Here there is a little piece of code: #include <stdio.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> /* The last 3 libraries are included because in the real program I use some... (4 Replies)
Discussion started by: robotronic
4 Replies
Login or Register to Ask a Question