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Scanf Statement Not Working

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I can't find the reason. Why is it doing this? There is really no reason to use feof() at all. How do I get the last lines of dust into the dustpan? Check This Out

For example: int x = 2; switch(x) { case 2: printf("Two\n"); case 3: printf("Three\n"); } prints out: Two Three Put a break to break out of the switch: int x = Movie involving a cute Blondie that fights a dragon What power do I have as a driver if my interstate route is blocked by a protest? What should I do about this security issue? Workaround: Manually disable buffering or add fflush(STDOUT)-statements. –Deduplicator Jun 21 '14 at 18:51 | show 7 more comments 1 Answer 1 active oldest votes up vote 3 down vote Your description click for more info

Second Scanf Not Working

All else apart, error reporting is much easier when you have the whole string to work with, not the driblets left behind by scanf() after it fails. Inconsistent size of parentheses in Latin Modern and Computer Modern Visitor can't access a copied seattle.master page Why did the Winter Soldier kill these characters? share|improve this answer answered Mar 5 '12 at 7:05 Jonathan Leffler 444k62516830 add a comment| up vote 4 down vote Use the function void fflushstdin( void ) { int c; while( Evil and pain awaits the one who possess me Would mask law helps prevent racial and cultural conflicts in the medieval times?

Another possibility is that '\n' in the output stream might trigger a flush. I hope this helps! Do GUI based application execute shell commands in the background? Multiple Scanf In C Why?

Higher up doesn't carry around their security badge and asks others to let them in. Better to limit your scanning with the length specifier, like scanf("%99s", personsName); and so on. Did the Gang of Four really thoroughly explore "Pattern Space"? http://stackoverflow.com/questions/3744776/simple-c-scanf-does-not-work concatenate lines based on first char of next line Higher up doesn't carry around their security badge and asks others to let them in.

This means in the example above that if fgetc() returns back the EOF value, the casting may change the value so that the comparison later with EOF would be false. Scanf C Example asked 3 years ago viewed 2461 times active 12 months ago Upcoming Events 2016 Community Moderator Election ends in 7 days Blog How We Make Money at Stack Overflow: 2016 Edition It is very common for students go one too far in an array. Most C library string functions that create strings will always properly null terminate them.

Scanf Not Working In C

Hot Network Questions One Itemize problem Evil and pain awaits the one who possess me My boss asks me to stop writing small functions and do everything in the same loop Problem, this scanf maps to the shape char. Second Scanf Not Working Why did the Winter Soldier kill these characters? C Programming Scanf Not Working The next fgets() fails and so the line variable holding the contents of the last line is not changed and is printed out again.

I'm on the second chapter using the scanf and printf functions and my program is working, but only printing the statements to the console once I've entered the three ints into Why do solar planes have many small propellers instead of fewer large ones? Not the answer you're looking for? Skips over this Scanf: length. Scanf Doesn't Work

C's function returns true if the last function failed. Why is this funny? Then the value of ch must be cast back to an int to compare it with EOF. You might want to read this: C FAQ : Why does everyone say not to use scanf?

This can lead to unpredictable behavior of the program. 2.5 Integer division Unlike Pascal, C uses the / operator for both real and integer division. How To Use Scanf Home Programming Email me PC Assembly Tutorial Common C Errors Debugging Tips Multi-module Programs Using Emacs Blog Common C Programming Errors Table of Contents1. By How2BecomePro in forum C Programming Replies: 5 Last Post: 06-23-2009, 04:51 AM switch statement inside a do while By Chaplin27 in forum C++ Programming Replies: 4 Last Post: 09-14-2004, 09:33

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If you can not answer this question, it is likely it doesn't point to any variable. Why did the Winter Soldier kill these characters? I'm expecting it to printf, then scanf for user input like so: Enter the box length: (waits for user int input; ex. 8 + "Enter") Enter the box width: ... How To Use Fgets Browse other questions tagged c if-statement or ask your own question.

Getting "Current Sitecore database cannot be established" using Sitecore Powershell Extensions How not to lose confidence in front of supervisor? Forum Today's Posts C and C++ FAQ Forum Actions Mark Forums Read Quick Links View Forum Leaders What's New? share|improve this answer answered Oct 26 '10 at 12:32 leppie 84.3k13148256 +1 I need to learn to type faster :D –nathan Oct 26 '10 at 12:39 add a comment| If this value is missing, many C string functions will keep processing data past the end of the meaningful data and often past the end of the character array itself until

How to find the maximal number of elements of an array? Here's a better version of the program: #include int main() { FILE * fp = fopen("test.txt", "r"); char line[100]; while( fgets(line, sizeof(line), fp) != NULL ) fputs(line, stdout); fclose(fp); The second scanf() will overwrite the previously taken input. For similar reasons, don't use the other relational operators (<,>,etc.) with strings either.

Dynamical allocation should only be used when it is required. more hot questions question feed lang-c about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Not the answer you're looking for? However when I run my program after I input all the values using scanf my program is not proceeding to the next lines of code : the problem looks like this:

It is important to understand how C determines which it will do. Why? share|improve this answer answered Sep 19 '10 at 6:44 Jonathan Leffler 444k62516830 add a comment| up vote 0 down vote Try also _flushall() after each printf call. . Implementing `exclusions' in ListPlot Has "the destruction of the space shuttle Challenger...

So, the moral of all this is: always use an int variable to store the result of the fgetc(), getc() and getchar(). 4.2 Using feof() incorrectly There is a wide spread share|improve this answer answered Oct 26 '10 at 12:53 Marm0t 656613 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign share|improve this answer answered Sep 4 '15 at 14:13 stackptr 5,54512256 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign The semicolon after the while defines the statement to repeat as the null statement (which does nothing).

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