What is the difference between fputc and Fputs?
fputc() writes the character c, cast to an unsigned char, to stream. fputs() writes the string s to stream, without its trailing ‘\0’. putc() is equivalent to fputc() except that it may be implemented as a macro which evaluates stream more than once.
What is the difference between Putchar and putc?
The putc() function converts c to unsigned char and then writes c to the output stream at the current position. The putchar() is equivalent to putc( c , stdout) . The putc() function can be defined as a macro so the argument can be evaluated multiple times.
What is the difference between Putchar and puts?
putchar is abbreviation for PUT CHARACTER whereas puts is abbreviation for PUT STRING. As the name specifies putchar is used for printing a single character on console or standard output whereas puts prints a string with an additional newline character at the end. It is used to write a line to the standard output.
Is putc a macro?
putc can be implemented as a macro but what is the problem doing same with fputc? The second statement mentions of some complications and safety issues. What are those? putc evaluates its argument more than once.
What does fputc do?
Description. The fputc() function converts c to an unsigned char and then writes c to the output stream at the current position and advances the file position appropriately. If the stream is opened with one of the append modes, the character is appended to the end of the stream.
What is the difference between GETC and Fgetc?
getc returns the next character from the named input stream. fgetc behaves like getc, but is a genuine function, not a macro; it may therefore be used as an argument. fgetc runs more slowly than getc, but takes less space per invocation.
What does PUTC return in C?
This function returns the character written as an unsigned char cast to an int or EOF on error.
What is the use of Putchar and puts?
The function puts() is used to print strings while putchar() function is used to print character as their names specifies. These functions are from the stdio. h class doing the jobs related to strings.
What is the difference between putchar and printf?
printf is a generic printing function that works with 100 different format specifiers and prints the proper result string. putchar , well, puts a character to the screen. That also means that it’s probably much faster. Back to the question: use putchar to print a single character.
How does Fputc work in C?
fputc() is used to write a single character at a time to a given file. It writes the given character at the position denoted by the file pointer and then advances the file pointer. This function returns the character that is written in case of successful write operation else in case of error EOF is returned.
How do you use fputc?
The syntax of the fputc() function is as follows: Syntax: int fputc(int ch, FILE *fp); The fputc() function is used to write a single character specified by the first argument to a text file pointed by the fp pointer. After writing a character to the text file, it increments the internal position pointer.
Is the putc function the same as fputc?
The putc function is equivalent to fputc, except that if it is implemented as a macro and may evaluate stream more than once, so that argument should never be an expression with side effects. putchar writes the character to the console, and is the same as calling putc(c, stdout).
Is the putchar macro the same as putc?
The putchar macro is the same as the putc macro except that putchar writes to the standard output. The fputc subroutine works the same as the putc macro, but fputc is a true subroutine rather than a macro. It runs more slowly than putc, but takes less space per invocation.
What happens if fputc ( ) is invoked more than once?
If putc () is a macro that evaluates its stream pointer more than once, then the *fpp++ may be evaluated more than once, leading to chaos. If putc () is a function, or if you invoked fputc (), then *fpp++ is guaranteed to be evaluated just once. It is a largely artificial example, but semi-plausible.
How is the character ch written in putc ( )?
Writes a character ch to the given output stream stream. putc() may be implemented as a macro and evaluate stream more than once, so the corresponding argument should never be an expression with side effects. Internally, the character is converted to unsigned char just before being written. On success, returns the written character.