C :: Fgetc Assigning Input To Character

Apr 8, 2014

What I am doing is using fgetc to take a char input from the user, and then directly after that calling a function which will clear the buffer and remove the character. But for some odd reason all my inputs are being assigned before taking the char input by the user. Here is my code for the relative problem:

Code:
char playAgain; Code: playAgain = fgetc(stdin);
readRestOfLine(); Code: void readRestOfLine(void) {
int ch;
/* remove all characters from the buffer */
while(ch = getc(stdin), ch!='
' && ch!=EOF)
;
/* clear the error status of the input pointer */
clearerr(stdin);
}

And en example through terminal of the issue, with print statements debugging the value of play Again:

So in both instances here I have entered 'y', one returning it as ASCII 10 which is ' ' and ASCII 121 which is 'y'.

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C/C++ :: Read Input File Character By Character?

Aug 10, 2012

How do I write an a program that will read an input file character by character?

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C++ :: Assigning Input To Value - Random Output

Jul 24, 2014

I'm using getline, and stringstream to assign an input to a value. How to do something similar with a random output.

//Battle with Samer
#include <iostream>
#include <string>
#include <sstream>
#include <ctime>
#include <cstdlib>
using namespace std;

const char* PokemonSamer[6] = {
"Charizard", "Umbreon", "Mew", "Arcanine", "Espurr", "Luxaray"

[Code] ....

When I run <PokemonSamer[rand() % 6]>, I want to be able to save whatever that output may be, and save it to <string Samer>. Is this possible?

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C :: Check Whether Input Is A Character Or Not

Apr 27, 2013

Code:
char value;
printf_s("enter:");
if (scanf_s("%c", &value) != 1)
{
printf_s("oppppssss
");
}
else
{
printf_s("ok");
}

I wanted to check whether the input is a character or not, if a character is given then the output suppose to be "ok", but the output is always "oppppssss", where is the problem here?

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C :: How To Input Inventory For Character

Jan 15, 2015

im working on mine first 2d game and im practicing a lot, how to input my inventory for character ( for items, and others ) So, i just want to let u know that i have :

#define WEAPON_LONGSWORD (1)
#define WEAPON_WARAXE (2)
#define WEAPON_DAGGER (3)
#define WEAPON_SHORTSWORD (4)
#define WEAPON_BOW (5)
#define WEAPON_MAX (6)

So, i want to put this in my shop and if i buy it i want to appear in my inventory, or sell sell trought my inventory.Also i have one define

#define WEAPONBEGIN_WOODENSTICK (1)

Which will go instant ( when u create character ) to inventory. And:If i have 1, 2, 3, 4, 5, 6, 7, 8, 9 slots ( example ) and i sell item which was on 3rd slot, what will happen with others ? will they just go back for one slot or ?

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C :: Using Scanf To Read A Character From Standard Input

Nov 1, 2013

So running the following code

Code:
#include <stdio.h>
int main(void) {
char c;
int i=1;
while (scanf("%c", &c)==1)
printf("loop sequence %i: %c(%i)

[Code] ......

Done it seems a "carriage return" serves two purposes here, one is to signal the program to read in the character typed in before the "carriage return", another serves as a second character typed, how can i do this cleanly, that is without having to use a "carriage return" as the second character to signal "I've typed in the first character already".

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C :: Prompt User For Input And Display Character In Every Line

Mar 17, 2013

I am having problems printing "->" on the beginning of each line, im trying to do it as a loop and ending it when the user types "q". also i would like to know how to ignore text from the user when the input begings with a specific character. heres what ive done so far, and not currrently working as expected.

Code:
#include <stdio.h>
int main (void) {
char prompt;
printf("~~~ FRACTION CALCULATOR ~~~

[Code] ....

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C :: Comparing Part Of Character Array With Scanned Input

Feb 25, 2013

I want to compare the part of the character array with the scanned input. I've initialized the character array (colourCompare).

What I want to do is, if the input colour matches up with one of the elements in the colourCompare array, it will then read the next value(I did not include "read the next value part"). If the input does not match up, then it goes back to the scanning part.

Code:

char colourCompare [12][6] = {"Black","Brown","Red","Orange","Yellow","Green","Blue","Violet","Gray","White","Gold","Silver"};
float resistanceCal() {

[Code]....

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C :: Read String From Input Then Determine Which Character Is The Largest

Jan 12, 2015

I'm very new to c programming and I have some background in C# and java. I am supposed to read a string from input then determine in that string, which character is the largest, i.e. I think b>e and e>z, e.t.c. If the string is empty I should return ''.

I haven't done any programming in C before and I don't know how to handle strings and characters in C.

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C++ :: How To Store User Input In Character Array Through Getline

Jul 2, 2013

int main() {
char StudentName[4][10] = { "Hermine", "Paul", "Gertrude", "Leon" };
cout << "Student Names";
cout << "
Student 1: " << StudentName[0];

[Code] ....

This code work fine...but i want to take name from user..how i store it in character array through getline()..

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C++ :: Validating User Input - How To Declare Array Of Character

Apr 29, 2012

Question simple like that: Let user enter some words from keyboard, one word per line until a '.' (period) entered then print out result, for example:

Code:
Enter a word: word1
Enter a word: word2
Enter a word: .
You have entered 2 word(s):
word1
word2

Problem is I don't know how to declare the array of character at the beginning since I don't know neither how many word user may enter nor how many letter of each word. So I go ahead and declared like this: char word[20][50] but I know it is not best way.

Code:

int main () {
char word[20][50]; //array has maximum 20 words, each word maximum 50 character
int i=0, number_of_word;
do {
printf ("Enter a word: ");

[Code] ....

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C :: Syntax Error At The End Of Input And Warning (multi-character Constant)

Feb 18, 2013

Here's my code. The error's at the last line.

Code:
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#define max_con 30

void add_contact();
void edit_contact();
void del_contact();
void list_contact();

[Code] .....

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C :: Write Text And Find Frequency Of 1 Chosen Character In It - Input Error Handling

Dec 20, 2014

I'm new in programming, and trying to write a code in C. The requirement is following - to write a text, and to find frequency of 1 chosen character in it. The main thing is that program should check user input (for example, I want to check if user entered "char" --> then correct, or if entered "int" --> not correct). But the program still doesn't check. So I have:

Code:
#include <stdio.h>
int main(){
char c[1000], ch;
char i, count=0;
printf("Enter a text: ");
gets(c);

[Code] ....

Am I on my right way using if/else?

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C++ :: Multi-character Character Constant Error Message?

Sep 14, 2014

I keep getting this warning message and I do not know how to fix it. Is it because I'm using char to instead of strings to replace all 't' with 'lp'?

#include<iostream>
#include<string>
#include <stdio.h>
using namespace std;
char * scanf(char * a) {

[code]....

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C++ :: Reading Data Character By Character From Text File

Jul 25, 2012

Double values are stored in text file. 23.5 36.8 34.2 ... My teacher told me to read them character by character and then make words, like i have to read "2" "3" "." "5" and now have to make it or treat it as word and then using atoi(). I have to convert it into double. but i dont know how to do this....

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C :: Read From Stdin (File) Character By Character

Nov 10, 2013

I have to optimize a code for below scenario. I am reading stdin (a file redirected to stdin) character by character. How many chars are going to come is not known. After every few chars there is a seaparator. e.g $ as below

rhhrkkj$hghjhdf$ddfkrjt

While reading, if the separator arrives I'm processing the string stored before that separator and then continue reading stdin in same fashion, till EOF. I am using getc(stdin) to read chars.

Using gprof I can see most of the program time is spent inside main() , for this reading logic. Rest of the program is just some insert and search operations. I am getting time of 0.01 secs at the moment, want to reduce further.

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C++ :: How To Read TXT File Character By Character

Oct 6, 2013

In my program, I'm supposed to read a text file (the name of which is given to me as a command line paramater, as long with an integer), and display the text in a specific format (each line can only be as long as the integer). However, I'm having trouble even reading the text file. I don't know the syntax. I'm only allowed to edit the function that does the formatting, and the code in that is

void typeset (int maxWidth, istream& documentIn)

I don't know how to 'read' the file, as most examples online are ifstream, or openFile or something like that. What I want to do is just read the first character of the file, and continuously keep reading characters until the end of the file.

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C/C++ :: Replacing Character In String With Another Character

Sep 13, 2014

So I'm trying to create a function that replaces any instance of a character in a string with another. So first I tried the replace() string member function:

In my implementation file

void NewString::ReplaceChar(const char& target,const char& entry)
{
this->replace(this->begin(),this->end(), target, entry);
};

Main program

#include "NewString.h"
using namespace ...;
int main()

[Code].....

Instead of replacing the the l's with y's it outputted a long string of y's. Also, NewString is derived from the string class (it's for the assignment). the header and whole implementation file, already tested.

I've also tried, instead, to use a for loop in ReplaceChar() but I need to overload the == operator and I don't know how I should exactly:

bool NewString::operator ==(const char& target)const {
if(*this == target)
return true;

[Code]....

I want the == operator to test if the value in the char array is equal to target but I'm not sure how to pass in the position. I'm guessing the this pointer in ReplaceChar() is not the same as the one dereferenced in ==() because target is never replaced by entry in the string.

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C++ :: Assigning Bits A Value Of 0

Feb 12, 2014

I am having a problem assigning bits a value of 0. The data is a 16 bit integer the bits greater than the 12th bit have garbage either a 0 or a 1. I would like to assign all bits greater than 12th bit the value 0 no matter what their values are. Whats the best approach.

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C :: Assignment Of Element Of 2D Character Array To 1D Character Array

Jul 4, 2014

Can we do this :

Code:
char strings[][100]={"ABC","EFG","IJK","LKM"};
char temp[100];
temp=strings[1];

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C :: Assigning Value To Char Pointer

Feb 3, 2013

I thought we needed to allocate memory before assigning a value to a char* and also that we needed to use functions like strcpy() to copy something into it. Then how come this works and does not crash?

Code:
#include <iostream>
using namespace std;
int main()
{
char * buf;
buf = "Hello";
cout << buf << endl;
buf = "World!!!!!!!!";
cout << buf << endl;
return 0;
}

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C :: Assigning Value During Pointer Declaration

Aug 31, 2013

I am trying to understand the behavior of following code. Basically how does printf() prints the value rather than address.

Does initializing value to a pointer during declaration makes a difference when assigned from a variable?

Code:

1 #include <stdio.h>
2
3 int main() {
4 const char *var1 = 'A';
5 int *vint = 10;

[Code] ....

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C :: Assigning A Structure As A Unit

Feb 21, 2014

I am reading the book C Programming Language. On Structures, it says:

"The only legal operations on a structure are copying it or assigning to it as a unit, taking its address with &, and accessing its members."

What does it mean assigning a structure as a unit?

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C++ :: Assigning Values To Arrays

Apr 13, 2013

Here is the code:

#include <iostream>
using namespace std;
int main(int argc, char * argv[])
{
double foo [5][5];

This is the warning:warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x...It's referring to the boldened part.

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C++ :: Assigning Multidimensional Vectors

Sep 28, 2013

I've seen code examples for assigning 2 dimensional vectors, but I haven't seen code for assigning more than that. I tried to create a 3 dimensional vector, and the only code the IDE didn't complain about was

int x = 2;
int y = 2;
int z = 2;
vector < vector < vector <string> > >stringvec;
stringvec.assign(x, vector <string>(y), vector <string>(z));

Would this be the correct way of producting a vector[2][2][2]?

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C++ :: Using Pointer In Union And Assigning Value

Jul 2, 2013

In the current code,We are using pointer of union and assigning value.

class sample {
union {
short *two_int;
int *four_int;
double *eight_real;
char *one_ascii;
// void *v;
}; }

Than we assign value in following way.

sample.four_int[0] = (x + xoff); ( x and xoff and y and yoff all are integer)
sample.four_int[1] = (y + yoff);

Than we write data into file. it was working fine into 32 bit machine but it is not working 64bit machine. When I compare data and found that data is divided by 4. For Ex The File generating from 32 bit machine contain 80 than 64 bit . File contain 20.

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