Hi,
I've just finished coding a database program which saves info to a file currently defined as "mb.dat".
The problem is I want the user to give the filename when prompted.
So how can i save a string variable that I can use in the following code?
FILE *fp;
fp = fopen("variable","wb"); /* open file for writing */
I've had a go at using stringcpy and defining the varible as type CHAR but I'm going wrong somewhere as the compiler just shouts at me!
I'm a beginner so please go easy. Thanks.
char buf[some_size];
fgets( buf, sizeof(buf), stdin );
fp = fopen( buf, "wb" );
Quzah.
Hope is the first step on the road to disappointment.
> fgets( buf, sizeof(buf), stdin );
Don't forget to remove the \n from the end of the line
Here's how
char *p = strchr( buff, '\n' );
if ( p != NULL ) *p = '\0';
>Here's how
>char *p = strchr( buff, '\n' );
>if ( p != NULL ) *p = '\0';
Wouldn't this work as well?
fgets( buf, sizeof(buf) - 1, stdin );
No. 'fgets' reads up through a newline character, or until it's read the total number of characters. It always reads up to a newline if there is one in the string before it's buffer is full.>Here's how
>char *p = strchr( buff, '\n' );
>if ( p != NULL ) *p = '\0';
Wouldn't this work as well?
fgets( buf, sizeof(buf) - 1, stdin );
All you are doing is changing the amount it reads into the buffer, not the fact that it will still read the newline:
buf[1000];
fgets( buf, sizeof(buf) -1, stdin ) ... just makes it read up to 999 total characters instead of a thousand. If the strings were something simple, like this:
"mystring\n"
"string\n"
It would still end up reading the newline. If the strings were 2000 characters in length, without a newline, it'd only read 999 of the characters and stop.
Quzah.
Hope is the first step on the road to disappointment.
