int open file in c
#include <unistd.h>
#include <fcntl.h>
int main()
{
int filedesc = open("testfile.txt", O_WRONLY | O_APPEND);
if(filedesc < 0)
return 1;
if(write(filedesc,"This will be output to testfile.txtn", 36) != 36)
{
write(2,"There was an error writing to testfile.txtn"); // strictly not an error, it is allowable for fewer characters than requested to be written.
return 1;
}
return 0;
}how to open a file with open in c
int main (void)
{
int fd = open("path_name.c", O_RDONLY); // the file is now open, you just need to read it
return (0);
}Copyright © 2021 Codeinu
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