scanf("%f", &length);
length is an int, you are passing a float. Same with scanf("%f", &breadth);
Either you change the type in the declaration of length and breadth, or change the f to d in the...

if( line == pattern)
That's a no-no, since line and pattern are strings and you can't compare arrays in that way.
Take a look at the string function strcmp() for that.
However, even if that would...

The controlling expression of a switch shall have integer type.
An array of chars will not do.

Do you know how to open a file and read from it?

One step at a time.
Start learning how to assign values to arrays.
Learn how to read a single or group of characters from a file.
After that it is just a matter of parsing what's read and...

Plenty of thing are erroneous in your snippet, however I would like to point out the cause of your affliction for now.
printf(" A - Addition\n S - Subtraction\n M - Multiplication\n D - Division\n Q...

Funny, I thought that was part of the requirement.

Perhaps another approach?
#include <stdio.h>
#include <ctype.h>

void clean_spaces(void);
int main(void)
{
clean_spaces();
return 0;
}

Here's an assignment. Search why gets(s[i]); is a no no.

What is it that you are sorting the names by?

priyairani00> "program to swap two no. using third variable"

tmp = a;
a = b;
b = tmp;

EvilOrange> <--Line 27 - proving the scanf("%s", &tmpfilename) is working
Dealing with the format %s in scanf() you must pass the argument as plain tmpfilename or as &tmpfilename[0], but not as...

On the phone
Nick: Doctor, can you cure my cough? It is a horrible cough, I cannot sleep at night.
Dr. Hell: Sorry, Nick, I cannot prescribe the proper medication without seeing you first, make an...

no1zson> can somebody look at my IF loop (the first one for selcting 1-3) and see where I am going wrong?

I am sure we can guess what you are trying to do, but don't you think it would be more...

yellowSnow> If this is the case, then perhaps you should try using the strtok() function.
strtok() is a poor designed function, which make this recommendation a poor choice.

EvilOrange> string[j][0] = string; <-- HERE IS THE PROBLEM

string[j][0] is a space to hold a character
string, on the other hand, is an array of characters. For sure there's going to be a problem...

nonadoes> Only need to extract the number after "_C", "_V", "_S" & "_M"
Search for character _ and when you find it skip one more and that's the number you want.

sscanf() returns EOF if it fails or the number of items that has been successfully read. By using an if statement a minimum of checking has been accommodated. It is imperative to check the return of...

You are mistaken.
int printf ( const char * format, ... ); is the prototype. You passed it the proper argument.

file_name is a pointer already to the first character of the array.
You must omit the & or do it as &file_name[0]

The garbage output probably happens because the string is not terminated with a...

sanushks> Thanks! atoi works...
Do you know what happens if atoi fails to convert?
Your first choice of using sprintf was superior, since error checking is better with it.

lolguy> the removing of the character outside it whish should increment the j to 3 whish should remove E

You are confused. printf("%d",j); is not the subscript used to delete the matched...

>Apparently the return value from gets() differs in some way from the return value of fgets() -- enough to break the code as I've written it.

fgets() reads and include the enter key to the string,...

As well as the parameters that it would take if it takes any. Allowing the compiler to check that the function is properly defined.

Let's look at this function prototype then.
int display(int i);...

OP> But when i do it gives me errors on most of my functions saying they 'must return a value', when i void the functions

Do you know what these are at the beginning of the program?
void...

GREAT eBAYER»-(¯`v´¯)-»YOU ‹(•¿•)› POSITIVE w/ 5*-:¦:-THANX-COMEBACK.A++++++++++

[Edit] Oops! Wrong internet.

You know at least this is not C but rather C++, right?

OP> the main errors are in with "for(i=0; i&lt;MAX; i++)" this part of the code but i can't see whats wrong.

for ( i = 0; i < MAX; i++) is...

>sunny╠╠╠╠╠╠╠
>do you know why this is?
Most likely because no null terminator '\0' is finishing the string.

Must you? Could we encourage you to change your mind? For the good of the community, please? :D

jephthah, don't worry I'll try to bandage you up afterward. :P

Yes, before my time with the language. And even when I am aware of the difference in defining the function in the old way, I completely missed.

>Any ideas?
That source code is making an easy job extra complicated.
All that is needed.

char *dress_down(char *s)
{
while (*s) {
*s = tolower(*s);
++s;
}

This source code is plagued with syntax errors.
printf ("word: <%s>\n", w); requires the header file stdio.h

int set_keysig (type s, type ks, type init); Prototype missing ; and type, where type...

In the interest of not entering a pissing contest I am going to leave it at that.

While placing prototypes at the beginning of the program, and outside any function, is not strictly necessary, it is a measurement of good practice. Therefore I support the statement of MosaicFuneral...

>what does the above program do with "main"?

A mockery of the C Standard, and a massive example of undefined behavior.

Any argument passed in the command line is going to be a string as you seems to know. However, casting it to just an int is not going to help. You need to convert that string numeric representation...

I don't know what the function gtk_button_new_with_label() does since it is not prototyped in the code you provide, however, it appears that returns a pointer and not an int.
Making all the errors...

>while(!feof(file))

I glanced very quickly to your last post and saw that.
feof(file) would never give you the expected result as a loop control.
See here (http://www.gidnetwork.com/b-58.html)...

Merge Sort Algorithm Analysis (http://linux.wku.edu/~lamonml/algor/sort/merge.html)

If I understand you correctly, you want to create variables dynamically at run time.

No. It is not possible.
C is strongly typed. Variables need to be declared before hand.