fprintf การใช้

This is easy to do-just replace'printf ('with'fprintf ( stderr,'and all will be well.
:: I too am not a Matlab user, but taking a quick look at the documentation, the fprintf function may serve your needs.
For example, the statement fprintf ('% 5d', A ); should ( if I understand the documentation correctly ) format all of the numbers in the array A as decimal integers right justified in a 5 character string . if A contains floating point values instead of integers, you might need to try fprintf ('% 5d', round ( A ) ); to convert the matrix to integers.
For example, the statement fprintf ('% 5d', A ); should ( if I understand the documentation correctly ) format all of the numbers in the array A as decimal integers right justified in a 5 character string . if A contains floating point values instead of integers, you might need to try fprintf ('% 5d', round ( A ) ); to convert the matrix to integers.
In terms of how printf is written, traditionally, anyway, printf, fprintf, and sprintf are all written in terms of something like vfprintf . vfprintf, in turn, is written in terms of putc ( as are putchar, fputs, and the rest ) . putc writes characters to a buffer, and when the buffer is full, it's flushed to the operating system using the " write " system call, as others have described.