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Proper fscanf in C

By : totino56
Date : September 13 2020, 09:00 AM
it helps some times There are multiple errors in the scanf format.
Here is the correct scanf format string:
code :
" %[^,], %[^#]#%d/%d/%d %[^(](%[^)]) %[^/]/%d"

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How to determine, inside of "while(fscanf != EOF){blah}", if the next fscanf is going to return EOF?

By : user1955782
Date : March 29 2020, 07:55 AM
I wish this helpful for you Couldn't you just modify the while condition to account for these additional conditions?
code :
while(fscanf(...) != EOF || !(some_other_conditions_met)) 

reading files: How file pointer is moved using fscanf and how scanf/fscanf work with missing %type

By : Charles Okorafor
Date : March 29 2020, 07:55 AM
I hope this helps .
The rule is very simple: fgets() reads an entire line, unless the length of the line exceeds the provided buffer, in which case it reads as much as it can. fscanf(), on the other hand, reads what you tell it to, skipping the preceding whitespace. For example, given a line "1 2 3" (without quotes), fgets() will read the whole line, while fscanf(fp, "%d %d", &i1, &i2) will read two integers and store them to the provided addresses, and leave " 3" (note included whitespace) unread.

How can I skip a value and go to the next one in fscanf(), and how can I fscanf() a specific type

By : user2451048
Date : March 29 2020, 07:55 AM
I wish did fix the issue. How can I skip a value and go to the next one in fscanf()? For example I have the following data in my input file:
code :
int fun() {
 int unusedvar;
 float value;
 FILE *fp=fopen("yourfilename","r");
 return 0;

Why in the given piece of code `fgetc()` function gave proper output whereas `fscanf()` failed to do so?

By : user77
Date : March 29 2020, 07:55 AM
help you fix your problem The following piece of code worked : , The problem is that you're assigning the result of fscanf to ch:
code :
    ch = fscanf ( fp, "%c", &ch ) ;  //to read the characters from read.txt
//  ^^^^^---- here
    if ( ch == EOF )
        break ;
if (fscanf ( fp, "%c", &ch ) != 1) {
if (fscanf ( fp, "%c", &ch ) == EOF) {

Using fscanf in C

By : Andrew Cogswell
Date : March 29 2020, 07:55 AM
it helps some times [] is a type all in itself, you shouldn't append s or d at the its end. All you really have to do is change the format to this:
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