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Questions tagged [putchar]

Anything related to C or C++ standard library functions `putchar` (C) or `std::putchar` (C++). These functions are used to write a single character to the standard output stream `stdout`.

Anything related to C or C++ standard library functions putchar (defined in <stdio.h> C standard header) or std::putchar (defined in <cstdio> C++ standard header). These functions are used to write a single character to the standard output stream stdout.

See CPPreference.com:

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putchar() function: ambiguous output

Here is a simple code , trying to clear spaces from character array, but output is not like I did expect "YasserMohamed". #include int main() { char x[]="Yasser Mohamed"; char ch; int i=0; while (x[i]!='\n') { …
user6398437
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character array reads 3 inputs instead of 5 in c?

my code is given below #include #include #define size 5 void main(){ int i; char letter[size]; for(i=0;i
user6214813
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K&R book 1.5.1 File Copying

I have looked around the site regarding this K&R example and the answers seem to revolve around 'why is this a type int or what is EOF?' kinda guys. I believe that I understand those. It's the results that I don't understand. I had expected this…
Old Sub Sailor
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encode program using getchar from command line argument and putchar to send to decode

So I'm trying to make a encode/decode program. So far I'm stuck in the encode part. I have to be able to get a message from the command line arguments, and encode it using a seeded random number. This number will be given by the user as the first…
Manuel Amador
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How do you ignore numeric input using getchar and putchar

I am new to C programming. One of my assignment questions is giving me a hard time. Here it is: Write an ANSI-C program that uses getchar() to read characters from the standard input, and uses putchar() to output only the letters, spaces (' ') and…
livin_DA_Life
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Merging fgetc and putchar in while loop

I am writing a simple code to print the content of the file to stdout. When i use this : while((c=fgetc(fp))!=EOF)putchar(c); It works like it should but i wanna to merge putchar and fgetc. So i wrote while(putchar(fgetc(fp))!=EOF); But it…
Chaker
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C - Swap chars using getchar and putchar

This is for homework . Must use only getchar and putchar int main(void) { int pch; //first int ch; //second while(1){ pch=getchar(); ch=getchar(); if(((pch>='A' && pch<='Z')) && ((ch>='A' && ch<='Z'))){ putchar(ch); …
Pedja Aleksic
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How does an 'enter' input work while running putchar() function in C?

I tested this code: 1 #include 2 3 main() 4 { 5 int c; 6 7 while ((c = getchar()) != EOF) { 8 putchar(c); 9 printf("%d ", c); 10 } 11 printf("%d\n", c); 12 } Question: When I inputted…
microbit
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Can anyone explain what the code putchar('/' //*/ 1) mean

I was doing the exercise of the K&R2. When i was reading the code by Ben Pfaff in this page http://clc-wiki.net/wiki/K%26R2_solutions:Chapter_1:Exercise_23 I coudn't understand what the single code putchar('/' //*/ 1) mean. While in my compiler, it…
NYoung
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I have two questions related to getchar() and putchar()

#include main() { char c; c=getchar(); putchar(c); c=getchar(); putchar(c); c=getchar(); putchar(c); c=getchar(); putchar(c); c=getchar(); putchar(c); } My 1st question is that whenever we use getchar() its create a buffer somewhere…
Vikas Verma
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Strange display EOF character in the windows console

Recently faced with an interesting interpretation of the EOF character console windows. On some machines running windows 7 code putchar (255) && putchar (-1) is displayed as a space character, and some as 'a' character. The second confuses me. Tell…
iGriffer
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C: printf() and putchar() questions

I was reading K&R book and wanted to test out printf() and putchar() functions in ways that I never tried. I encountered several unexpected events and would like to hear from more experienced programmers why that happens. char c; while((c =…
Jonas Hoffmann
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Outputting a poem in C with each word being on a new line

I have an assignment in a C programming class to output a poem with each word on a new line, using only the functions getchar and putchar. I have the majority of the program written, but I can't figure out how to only have one new line for multiple…
user1681673
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getch and putchar not working without return

I have been trying to get getch to work in another program with no success. So I have made the most basic program I can using getch the way I want it to work in the main program. I have researched the need for noecho, cbreak, initscr and nodelay, I…
UNECS
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How to compose characters into a single string in memory?

I am working on a school assignment and I need a little bit of help. My question is, how can I compose characters that are read in from a file into a single string of memory. Here is what i have so far. My Code: #include #include…
Cka91405
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