c
lseek/write suddenly returns -1 with errno = 9 (Bad file descriptor)
I don’t know what type of setup you have, but the following scenario, could I think produce such an effect (or else one similar to it). I have not tested this to verify, so please take it with a grain of salt. If the file/device you are opening implemented as a server application (eg NFS), … Read more
C: How do I make a number always round up
First of all, you use the data type int, which cannot hold fractional values (and will implicitly round them towards zero, even before the function is ever called.) You should use double instead, since this is the proper datatype for fractional numbers. You would also want to use the ceil(x) function, which gives the nearest whole number larger than or … Read more
In C, what exactly happens when you pass a NULL pointer to strcmp()?
It depends on the implementation, which is free to assume your parameters are valid (i.e. not null in this case). The behaviour may or may not be reproducible from execution to execution, or from one implementation/platform to another.
How to format strings using printf() to get equal length in the output
You can specify a width on string fields, e.g. And then whatever’s printed with that field will be blank-padded to the width you indicate. The – left-justifies your text in that field.
“-bash: gcc: command not found” using cygwin when compiling c?
You can install gcc by running setup-x86.exe or setup-x86_64.exe again. The gcc package is in the Devel category:
Reading float using scanf in c
Edit: I can’t reproduce the problem. Everything works as expected when I use the following code compiled with gcc: The output of gcc –version is as follows: gcc (Debian 4.7.2-5) 4.7.2
In C, what exactly happens when you pass a NULL pointer to strcmp()?
It depends on the implementation, which is free to assume your parameters are valid (i.e. not null in this case). The behaviour may or may not be reproducible from execution to execution, or from one implementation/platform to another.
How to format strings using printf() to get equal length in the output
You can specify a width on string fields, e.g. And then whatever’s printed with that field will be blank-padded to the width you indicate. The – left-justifies your text in that field.
“-bash: gcc: command not found” using cygwin when compiling c?
You can install gcc by running setup-x86.exe or setup-x86_64.exe again. The gcc package is in the Devel category: