C/C++ :: Program That Reads Data From A Text Document And Allows To Modify
Apr 30, 2015
I'm trying to make a program that reads data from a text document and allows me to modify it. I am stuck with the display() function. I can get the printf statement to display all my array values except the char AD value. When I include flight[i].AD it causes the program to crash. When I run the program to only display the AD variable I get a bunch of weird symbols. I'm not sure where the program is going wrong because it seems to be storing values properly except for the AD variable.
#include <fstream>
using namespace std;
//named constants
const int MAX=100; //maximum flights
const int SIZE=20; //maximum characters
//struct definition
struct FlightType
{
char name[SIZE];
I'm working on a program that reads in a .txt file and searches through the text for a keyword. If it gets a hit on the keyword, the line number where the keyword is located and the line that contains the keyword is printed out. What I have now doesn't catch every occurance of the keyword "a".
Code:
#include <stdio.h> #include <string.h> int main(int argc, char **argv) {
Write a program that reads data from a file (use the attached data file). These data are a student name and 3 test scores. The program should calculate the average of the 3 test scores, and display the name, 3 test scores, and the average to the monitor.
Useful tips: a) Include the following header files: iostream, fstream, iomanip, and string b) The name of the data file is “datafile.txt”, you need to save the file in the same folder of the source file. c) use the manipulators (setw, setprecision, setfill, showpoint, fixed) to format the average with 1 digits after decimal point as following. d) Use character ‘ ’ for tab.
Everything is working okay with name1 and pass1, but if I try to log in with different credentials, for example name2 and pass2 it says "invalid details"
Here is my code:
string user, chuser; string pass, chpass; string los; ifstream loginData("logindata.txt"); cout << "Please type in your username:" << endl; getline(cin, user);
I seem to be missing a concept or 2 here ... I am tasked with writing a program that reads text from a file and outputs each line to the screen as well as to another file PRECEDED by a line number ...
In addition, I have to Print the line number at the start of the line and right-adjusted in a field of 3 spaces ...
Follow the line number with a colon then 1 space, then the text of the line.
Another kicker, is I have to grab the data 1 character at a time and write code to ignore leading blanks on each line.
Here is what I have so far:
#include <iostream> #include <conio.h> #include <fstream> #include <string> #include <cstdlib> #include <cctype> using namespace std; int main() { char next; int count = 0;
I need to write a program that reads four float numbers from the input.txt file, then it prints out the greatest of the four numbers into the output.txt file. I did everything, but the numbers don't print out.
#include <iostream> #include <fstream> using namespace std; int main() { ifstream inFile; ofstream outFile; float number1, number2, number3, number4;
make a text file full of vocabulary wordsRead in that file and allow the user to specify the .doc file (should be simple)Go through the .doc file and highlight all the words that appear in the .txt file green.Open the .doc after the process is complete.
After I accomplish that, I can try to make more tweaks by maybe using a database instead for my vocabulary words and implementing error checking to be sure there are no duplicate entries, specify a different color for certain words instead of using just one color, etc. First and foremost, however, I want to know if the bare basics would be possible. I'm new to C++, but I have about 2yrs of Java under my belt, so I should be able to catch on relatively fast.
I was just wondering whether or not it is possible to "mix" characters and integer values in a text document that is to be read by C.
I am to read and use values for length around the hip, neck and such, however, most of the tutoring examples I am finding online seem to strictly deal with either integers or characters alone.
Basically my text file looks a bit like:
Abdominal length: 90.000 Neck length: 26.500 and so on
So, before I move further into this subject, is it possible at all to isolate and use only the double values or will I have to format my text file differently?
I have made a Student record system in c++ using the concept of linked list. The program will take the student id, name and marks for 3 different exams. Then it will calculate the aggregate percentage based on those exams marks and display the relevant message according to the aggregate percentage. All is going well. But there is only one problem. When I modify the student record especially the marks, it doesn't change the aggregate percentage of that specific record. It shows the old one. Similarly the relevant message doesn't change too.
Code: struct student{ int id; char name[MAX]; string status; double aggr; int matric_marks, inter_marks, entryTest_marks;
int is_phone_number(char* string) This function will take in a string and return 1 if it looks like a phone number 0 otherwise. A phone number takes the form (xxx)-xxx-xxxx where the xs are digits 0-9. So for example (123)-456-7890 is a valid phone number while 123 456-7890 is not.
You should also write a main function that parses a text document and prints out all of the phone numbers found. Hint, look up the strtok function.
Sample input: Please call me at (123)-456-789 sometime tonight.
I have a N queens (actually 8 queens to be specific) program that accepts the numbers in order by row. I need to get it so it accepts the numbers in order by column. At first glance I thought it was just one space different, but it turned out not to be and how to get the one space difference in there. My current code (which I'm aware isn't doing the column accepting right) is:
Code:
#include <iostream> using namespace std; int main() { int board[8]; cout << "Enter the columns containing queens, in order by column: "; for(int i = 0; i < 8; ++i) { cin >> board[i];
[Code]...
What the output should be:
Code:
Enter the rows containing queens, in order by column:
Been given an assignment to create a predictive text program. What data structure I should use for this and the steps I should take when I make the program?
Write a program that reads in ten whole numbers and that output the sum of all the numbers greater than zero, the sum of all the numbers less than zero (which will be a negative number or zero), and the sum of all the numbers, whether positive, negative, or zero. The user enters the ten numbers just once each and the user can enter them in any order.
Your program should not ask the user to enter the positive numbers and the negative numbers separately. Assume the user will type integer numbers.
this is what i got but it wont run saying there is an error
#include<iostream>; using namespace std; int main() { int count=0; int num; int positive=0; int negative=0;
#include <stdio.h> #include <math.h> int main(void){ int a,b,c; printf("Choose the values of a, b and c for the equation ax^2 + bx + c"); scanf("%d%d%d ",a,b,c);
I've been working on a program that displays the number of digits in each line of a file, but I feel stuck. Take for example a file that contains these characters:
6347aaa9 54j 811111 6a 709
And I'm trying to display a result like this
1 //that's the number of the line 5 //the number of digits 2 2 3 6 4 1 5 3
Here's what I've written so far:
Code: #include<stdio.h> int main() { char a=0; int number_of_digits=0, linescount=0, num, number_of_digits_per_line=0; FILE *inputFile; if(!(inputFile=fopen("C:TestTest.txt","r")))
[Code]..
I also thought of using fgets and strlen but I am not very good with them and couldn't get the program to work correctly. It did work but it displayed all characters, letters included, not only digits.
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.
Write a program that reads a group of chars till $. Then, compute # of vowels, # of digits, # of word and # of special chars. Your program should display all required results.
I'm not sure why Im getting a wrong Sum. of the Columns.
Write a method that returns the sum of all the elements in a specific column in a matrix using the following header:
double sumColumn(const double m[] [SIZE], int rowSize, int columnIndex)
Write a test program that reads a 3-by-4 matrix and displays the sum of each column. here is a sample run:
Enter a 3-by-4 matrix row by row: 1.5 2 3 4 5.5 6 7 8 9.5 1 3 1 Sum of the elements at column 0 is 16.5 Sum of the elements at column 1 is 9.0 Sum of the elements at column 2 is 13.0 Sum of the elements at column 3 is 13.0
#include <iostream> using namespace std; const int SIZE = 4; int rowSize=3;
