Tags down


how does " for (int j = 0; j < n || !putchar('\n'); j++) " work

By : Floyd Morris Noell
Date : September 23 2020, 04:00 PM
seems to work fine Because of ||, the function putchar will only be called when j < n is false. Now, j < n is false at the end of every line. That's why you get \n at the end of every line.
code :

Share : facebook icon twitter icon

Is getchar() equivalent to scanf("%c") and putchar() equivalent to printf("%c")?

By : Kartik Bhatia
Date : March 29 2020, 07:55 AM
I hope this helps . Generally speaking yes they are the same.
But they are not in a few nitpicky ways. The function getchar is typed to return int and not char. This is done so that getchar can both all possible char values and additionally error codes.
code :
char c = getchar();

haskell-mode prints "*Main>" on same line after using putChar?

By : Riki Quaresma
Date : March 29 2020, 07:55 AM
it fixes the issue putChar c writes just that one character to the console. That's what it's intended for. So unless you print a newline to the console afterward, whether with putChar, putStr or whatever other methods, the following output goes to the same line. The behaviour is the same as with C, or if you cat a file without trailing newline. It's ubiquitous. The only feasible alternative (it's unfeasible to check each output whether it ended with a newline) is to output a newline before the ghci or shell prompt unconditionally, which would lead to many annoying blank lines.

C++ Using "putchar" to output a word in Binary

By : Aleksy Sokolowski
Date : March 29 2020, 07:55 AM
I hope this helps . The problem is operator<<. The stream insertion operator is designed to convert it's input to text format and pass the formatted text to the stream.
code :
  file << putchar((word >> 24) & 0xff);
       ^^----> this is the problem.

Should I use printf("\n") or putchar('\n') to print a newline in C?

By : Ky Đoan
Date : March 29 2020, 07:55 AM
I wish did fix the issue. It will make no difference which one you chose if you're using a modern compiler[1]. Take for example the following C code.
code :
#include <stdlib.h>
#include <stdio.h>

void foo(void) {

void bar(void) {
movl    $10, %edi
popq    %rbp
jmp _putchar                ## TAILCALL

I used the function "putchar()" to print the result of a test, but i got a question mark instead

By : user3309495
Date : March 29 2020, 07:55 AM
I wish did fix the issue. First, accepting that the comparison getchar()!=EOF will yield a Boolean value, which will be converted to either 1 (for true) or 0 (false) when interpreted as any integral type, the statement:
code :
Related Posts Related Posts :
  • Why do these two execvp produce different results?
  • Pass uintmax_t or size_t to custom printf conversion specifier
  • Why does free() leaves stuff in memory?
  • Why pointers can't be used to index arrays?
  • memory allocation eror in C
  • C custom datatypes mapped to C datatypes grouped under a single struct
  • pipe() data is not transferred to child process
  • Getting a core dump from a simple C program
  • Fatal error on makefile, need to understand the problem
  • How can I add a delay of 90 minutes when a port has gone from 0 to 1?
  • To use strcpy or not
  • the usage of strtok() in c shows warnings and returns segmentation fault(core dumped)
  • Trouble allocating array of structs
  • Only first char of user input used in array
  • Why does "int x = 5; printf("%d %d %d", x==5, x=10, x==5);" in C print "0 10 0"?
  • How to scan specific string format in C?
  • sscanf skipping the final value when reading multiple values from a line
  • How can I access full memory space in FreeDOS with C application
  • Semantics of sem_getvalue() in POSIX
  • What does the [x,y] symbol mean in a multidimensional array access?
  • compilation error: cast from pointer to integer of different size
  • why am i getting compilation error "error: conflicting types for ‘ptr’ " for the following code? static int va
  • Why does getw return -1 when trying to read a character?
  • Why C program in whch two functions call each other recursively gives segmentation fault on linux?
  • ssize_t is undefined
  • Passing a generic argument in a C function
  • Restoring stdout after redirecting it via freopen()
  • Tuples "cannot be marshalled in a foreign call" when trying to export a Haskell function to C
  • Dereferencing double pointer to pass to recursive function
  • Why is the output different in these two scenarios
  • what will happen if we dont use free() for allocated memory
  • counting words from user input
  • Why am I not getting the concatenated string?
  • not understandable pointers errors
  • Issue with function memory allocation
  • /usr/bin/ld: cannot find -lioutil in Makefile
  • Segmentation Fault when finding longest word in input
  • undefined reference to `palloc'
  • DMA transfer taking more time than CPU transfer
  • How can I make my code find solution while working at specific coordination?
  • How to fix implicit declaration of function?
  • Writing a file line by line in C
  • "accept" always returns 1, but no descriptor has been closed
  • How to fix 'Bad file descriptor' after implementing here-string redirection in my own shell
  • Why this output string to number?
  • Is there any way to make this adding an infinite?
  • for loop is iterating printf written after scanf only once
  • How to efficienty count from 0000 to 9999 in a digit display?
  • Implicit conversion and explicit conversion in c
  • Attempting to convert a value into 2s complement in C
  • else statement is resulting in identifier expected in c 13
  • Thread-safety vs atomicity in C
  • Segmentation fault - Trying to read binary file into memory
  • How to make a variable declared in constructor visible in the main file
  • What is the fastest way to reverse a power of two in C?
  • Reading and writing structure to binary file in C, then print structure elements
  • Why casting double to int might give different results?
  • Greedy algorithm in C not returning any values?
  • How to find base address of same char in string array using pointers in C language?
  • Quick question, why is scanf_s throwing an exception in runtime here? I am very confused
  • shadow
    Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk