i have a question, i'm studyng the string library type and i have to write this program :
Code:
std::string word;
while (std::cin >> word) {
std::cout << word << std::endl;
}
why if my input is :
hi my name is ^Z
the output is :
hi
my
name
is
why the program doesn't fall out from the while loop ?
why my program does not recognize my sequence of end of file ?
Write a program to read in a sequence of examination mark from a text file named as input.txt and produce the mean, and standard deviation of the marks. Your program should also produce a bar chart for each grade where the range of mark is given as below.
GradeMarks Range
A80-100
B70-79.9
C50-69.9
D40-49.9
F0-39.9
Output the result to another text file named as output.txt.
write a program in c to read a sequence of N integers and print the number that appears the maximum number of times in the sequence.
View 1 Replies View RelatedI wrote a program which was supposed to decrypt a file encrypted with the XECryption algorithm. Now, I know the decryption algorithm, but I have a problem with my ifstream object. It doesn't read anything at all, and the ofstream object just outputs a single random byte in a never ending loop. I've tried using cin, which works correctly, but it's not what I want.
Here's the code:
#include <fstream>
#include <iostream>
using namespace std;
int main() {
ifstream in("file.in", ios::in);
if (!in.is_open())
[Code]....
I'm doing this on a Windows 8(.1) pc with Code::Blocks 13.12. In the file (file.in) I have replaced the points with spaces. What is wrong with the code?
I'm reading a binary file and I want to read all of the letters, but I have noticed that it doesn't read all of the letters and I think it is because of appears as data.
View 11 Replies View RelatedAny examples of a c++ program that uses recursion to find the longest increasing sequence from a grid in a file. Like
2 4 6 8
10 12 14 16
18 20 22 24
I have to use a structure named Point and a structure named Sequence.
const int MAXROWS = 4;
const int MAXCOLS = 4;
const int MAXFILENAME = 255;
// Structure used to define a point (x,y) in the grid.
typedef struct {
int x, y;
[Code] .....
Q) How to do nested loops?
Q) How to do Array?
Q) How to do Fibonacci sequence?
The following is a part of a hailstone cpp program. I want to write an option to let users enter 2 numbers and the program evaluates the longest sequence the number has within the 2-number range and return the count.
Code:
int longestHailstoneSequenceLength(int start, int end)
{
int max = 0;
int s= start;
while (s!=1)
[Code] ....
My program compiles but doesn't run, Here is the screen shot of debugging
//DynBag.cpp : Implementation File
#include <stdexcept>
#include <iostream>
#include "DynBag.h"
[Code] .....
c++ program that reads in a sequence of binary digits (values 0 and 1) and stores them into a STL container. The input should terminate on any input that is not a 0 or 1. After finishing the read-process, apply a "bit-stuffing" algorithm to the container. In this case the bit stuffing should occur after four consecutive bits of the same value.i,e. four 0's or four 1's.. Also write the de-stuffing code to process the stuffed data to recreate the original data and verify that the original data is recovered correctly.
View 6 Replies View RelatedI've written a program to read inputs in a text file. The file named Input.txt contain integers 2 3 and 4. My program is as follows:
#include<iostream>
#include<cstdlib>
#include<fstream>
using namespace std;
int main (){
int x,y,z;
[Code] ....
the program is outputing x=2293616 , y=0 and z=0 instead of x=2, y=3 and z=4.
I can't seem to get my program to alphabetize a vector string. It displays the names, but not in a sorted order.
void sort_names(vector<string> &nameList) {
int i, minIndex;
string minValue;
int size;
size = nameList.size();
[Code] ....
I created a basic socket server, which listensing for incoming udp data. When I run the netcat program, I get a response:
Code:
$ nc -luv 1732
Connection from 10.50.11.12 port 1732 [udp/*] accepted
(?@??8?? ??.?n?5
(?@??8?? ??.?n?5|?>)
(?@??8?? ??.?n?5|?>)
^C |?>)
But with my c program it doesn't give the response. It should say something like "here is the message: " and then give a message.
Code:
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
[Code] .....
I have been working on a program to scanfile and whenever it encounters what the user wanted it prints it, and it is all right less the first line of the file that the program jumps,
Code:
#include<stdio.h>#include<string.h>
#include<stdlib.h>
void main()
{
unsigned int j=0 ;
char num[100] , str1[100], str2[100];
FILE *fp;
[Code]....
Write a program that reads several strings from a file. Display the number of words then display each word as shown in the sample below. Assume that the maximum number of string in the file is 100.
Sample Input (.in):
Smitty
Werbenjagermanjensen.
He
was
number
1!
Sample Output:
Total Number of Words: 6
Word[0] = Smitty
Word[1] = Werbenjagermanjensen.
Word[2] = He
Word[3] = was
Word[4] = number
Word[5] = 1!
I am trying to get my program to calculate what point goes in what quadrant using a file. But msy program is not reading the values from the file and also it is not running so im not sure what's wrong with it.
//This program uses a fstream object to write data that will read the values of a (x,y) point from a file.
//add the appropriate preprocessor
#include <fstream>
#include <iostream>
[Code].....
The program will ask for the user to enter a value for x, then compute the following polynomial: 3x^5 + 2x^4 - 5x^3 - x^2 + 7x - 6.However, when I double check it with my calculator I get a wrong answer for random values of x. To simplify my problem I'm using only integers.
Code:
#include <stdio.h>
int main(void)
{
int x, polynomial;
}
[code]...
I am trying to write a program that can communicate over a very latent internet connection involving a cellular modem. I have some software packages that handle all the telnet like business and will pipe stdout and stdin to a program I can have it execute.
The problem I am running into is that I have to send about 900 ASCII commands to an instrument to request data but it takes about a second between when a command goes out and when a reply comes back. This will wind up taking a very long time and I am looking to speed it up. All of the commands are independent of the reply so what I need to do is create a program that can send all 900 commands with maybe 10ms break between them and to not wait for a reply. It then needs to read the replies and write them straight to a file.
It seems like this should be achievable in C++ but I only have a very basic understanding of the language and thus am not sure where to start.
I am open to using other languages but thought C++ would be a reasonably good start so I can distribute the program to my coworkers. All of our work machines are Windows but if there is a simpler solution from Linux, I should be able to work something out. I'm just trying to avoid complication.
#include<iostream>
using namespace std;
int main() {
int a[9],x,f=1;
cout<<"Please enter an integer [0-10 only] : ";
[Code] ....
I am writing a program in which the computer will read a txt file and encypt it. The encryption works fine, but the computer cannot read the file perfectly. If there's a newline, the scanning process stops. For example I have the following text in the txt file.
One two three four five
(newline) Six seven eight
The computer will stop reading after 'five'. I assume that is because I use fgets.
So I'm trying to create a program that allows one to read/write on to output.txt. I though I had everything set up right, but its only writing one word to the text file. Heres the code.
#include "stdafx.h"
#include <iostream> //Needed for User Input
#include <fstream> //needed for ofstream
#include <string> // needed for strings
#include <windows.h> //needed for Sleep
#include <cstdlib> //Needed for return EXIT_SUCCESS;
using namespace std;
int main() {
ofstream outputfile; //allows to read and write to files
[Code] .....
If I type Puppies Are Cute and go to output.txt, the only thing written in the text file is Puppies.
I'm trying to get the program to read from a file of 15 scores. 10 are quizzes 5 are exams. I want my program to read from the input file the first name "or" last name and if the user puts a different name, the program Gives off an error screen message
Code:
#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
using namespace std;
const int NUM_STUDENTS = 20;
const int NUM_QUIZZES = 10;
const int NUM_EXAMS = 5;
[code]....
Title is self-explanatory.
Code:
#include <iostream>
using namespace std;
int main ( ) {
float number;
float sum;
float divi;
while(number != -1) {
[Code] .....
I am making a program which is going to print out a head image according to the input values entered by the user. Here is the code:
Code:
#include <iostream>
#include <string>
using namespace std;
void Sides()
// draws the sides to take proportion
[Code] .....
At first i tried to work program like:
Code:
cout << "plase enter which way you want to print out the head, with parted hair or bald." << endl;
cin >> headstyle;
if (headstyle != "bald" || headstyle != "parted hair" )
But it also had given the same mistake. The program compiles BUT; even if I put in the values bald or parted hair the program prints out "wrong input" then exits.
I have been working on a program to read in a tab deliminated text file of xyz coordinates of atoms/particles and store the values in three seperate arrays. This is my code so far:
Code:
#include<stdio.h>
#include<stdlib.h>
void fileinput(FILE *ifp) {
int N, column, atom;
int c;
column = 1;
[Code]...
Supposedly this should assign the values in the text file to the cooresponding arrays but when I run the code on a simple test file all I get is:
Code:
$ ./input.o -i ./test.txt
Atom one coodinates x 0.000000, y 0.000000, and z 0.000000 Where test.txt is: Code: 1.0000 2.000 1.5
3.0000 5.000 1.4
4.0000 3.000 1.3
I have a lab with the following instructions:
Manually create an input text file called Lab22BInput.txt with the following data:
Dove
Doe
Alston
Zebra
Egg
Write a program that will read the names from the input file. Print out each of the names read to the screen. The program should go through the list of names and determine which comes 1st in the alphabet. The program should determine how many letters are in this name. Print out the name that comes first in the alphabet and the length of the name.
I have created the input file, and the data correctly outputs to the screen when I run the program. However, I do not know what kind of logic to use to sort them alphabetically and determine the amounts of characters.
So far I have the following:
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
int main()
{
string str1, str2, str3, str4, str5;
[Code]...