C++ :: Finding Max And Min From Integers In Text File
Oct 28, 2014
I have a predicament trying to read integers and placing them into an array and finding the max and min. Theres 500 of them and all separated by line:
200
300
400
My current code is this and Im pretty sure Im way off, plus the program crashing on debug isnt working.
void analysis::i_find() {
ifstream input;
input.open("input.txt");
[Code].....
The array is also supposed to keep track of how many times a certain number is supposed to appear and Im totally lost on how to do that.
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Oct 6, 2014
I created a program in C that opens a text file and read integers.
File `numbers.txt`:
> 5 6 4 6 3 4 1
I use some restrictions with the `fscanf()` library and read the file, just for the record, and if everything goes fine I proceed to the next part of code (I know I could use `fget()`, but this is how I done it).The next part of the code will be this:
- First, I want the program to read the numbers from right to left. I look for an answer in google and many C courses, but I couldn't find a working solution. I think that the code is pretty simple, though I can't find it. **To be clear for the next part, we read the numbers from right to left.**
- Then, this is the hard part for me: I want the program to read the numbers and if the next number is higher (**not equal**) than the last one to keep it in memory, **only if it's higher than the last.** This can be continue for **1 through 500.000 numbers.**
- Then when the procedure done, I want to print how many numbers are greater than the last one and save it to a file, which I can do it if I solve the last problem.
We have the below numbers:
5 6 4 6 3 4 1
The program starts to read the numbers from right to left.Now which and how many numbers are greater than the last one?
The answer is 3 numbers:
5 6 4 [6] 3 [4] [1]
Then the program will print the number 3 with a message and save it to a file called `xxx.txt`. I am posting the `main` code, not all the code just what you need to solve the problem:
Code:
#include <errno.h> // macros for reporting and retrieving error conditions
#include <stdio.h> // load main C library function
#include <stdlib.h> // need that for many reasons ;)
#include <string.h> // loads various of characters functions
}
[code]....
In conclusion, I want 2 pieces of code:
- One to read the numbers from right to left
- One to make the above procedure
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Nov 16, 2013
i have prepared a code the read from txt file with values such integers and strings. but the code i have prepared reads only 1 line. how can i make the code to read multiple records from txt file.
input records example in txt file:
9009 James 90
Code:
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
void main()
{
int c;
struct student{
}
[code]....
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Feb 19, 2015
I have the following code. Everything compiles but when it runs the sums are not correct. I need to calculate the sums for all the odd integers, the even integers, and all the integers.
my infile was provided with the following integers. I am not supposed to assume the infile has 20 integers.
Also, I wanted to the average to calculate with two decimal place precision and that is also incorrect??? setprecision(2) I thought would work???
#include <cstdlib>
#include <iostream>
#include <fstream>
[Code]......
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Sep 26, 2014
I'm basically trying to make a simple program that reads integers out of a text file and only adds the positive ones and not the negatives.
All is well except it won't take the last integer (the last line, I presume.) I took the negative out, nothing to do with that. I put more numbers in and I made the txt file less, no answer. No matter what the last number is, the program won't read it. I've been researching online and I've been seeing that it might be an issue with "while "!inFile.eof())".
Anyway here's the program:
#include <iostream>
#include <fstream>
using namespace std;
int main() {
ifstream inFile;
ofstream outFile;
[Code] .....
Here's the txt file:
5
6
-9
21
3
I'm always getting 32 for some reason.
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Feb 23, 2013
how assignments is to write code that returns a value that is repeated more than once in an array of 8 integers.For example:
Numbers: 30 12 100 33 2 2 1 40
Output: 2
Here is my code so far:
Code:
#include <stdio.h
int main(void){
int i;
int j;
int arr[8];
int count;
int maxCount = 0;
int maxValue = 0;
[code]....
When I compile this code (on Vim), I get an error when I print the array of 8 above (see ERROR above).
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Jan 25, 2013
Consider a new data type, the mikesint, which can hold 9 bits.
(a) What is the largest integer that an unsigned mikesint can hold?
(b) What is the largest positive integer that a signed mikesint can hold?
(c) What is the largest negative integer that a signed mikesint can hold?
Not sure how to determine this. I'm stuck.
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Jul 14, 2013
I am working on a text-based RPG game and I want to allow the player to save his progress. So I need to save several integers and a string. And my problem starts here "How can I save integers and load them?". I read the tutorial but I dont understand. I need to write a function to save game?
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Nov 29, 2014
Code software that, from an original text file, generate another file with the text content in upper case.For exemple:
entrence:
luke
tom
alex
outings:
LUKE
TOM
ALEX
My code so far:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
}
[code]....
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Feb 5, 2014
I need to find a string(&login=) from physical memory dump file.And i have to print the word or string following it.Is there any C# code for this problem?
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Jun 5, 2014
I want to make a program that opens a text file and checks the usernames listed in the text files to see if the names are registered on a site such as twitter. How easy would this be to make, what things would I need to know?
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May 31, 2013
I am trying to get text file and read only first 100 lines of the text content using c/c++. how can i do it?
is it something like string line;
getline(stream,line);
??
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Aug 30, 2013
I have a huge text file in following format:
{Bunch of text
.
.
}
[Code].....
I want to extract Text1, Text2, Text3, Text4,..., Text600 in the output file. How can i achieve this?
/* BTW, I am not getting my homework done here. I am an ex-programmer, who has now moved to marketing for some time now, and today, I encountered this problem, which I believe can be solved easily through programming. */
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Aug 31, 2014
i want to create 100 gmail accounts instantaneously....what i want from you guys is i have written a program that create a text file i want that once i give the program the imput of 1 it should delete the first 3 lines from the file i.e. the first account details coz that is already been created and shift the rest of it 3 lines upwards after that i'll write a javascript that will automatically fill and create the accounts with those names in web browser.....my lil program is here:
#‎include <stdio.h>
#include <conio.h>
main()
[Code]....
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Dec 4, 2013
My question is to write a complete program that will search a file of numbers(numbers.txt) for the smallest and largest numbers and then write the values to the screen using a single pass through the file. File only contains type int and holds at least one int. My questions are am I reading in the first number correctly? Where would I read in the second number to compare to the current max and min?
Code:
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char * argv[])
{
FILE *fin;
fin = fopen("numbers.txt", "r");
//check to make sure file opened
if(fin == NULL)
}
[code]...
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Oct 21, 2014
This function buildTree that reads an text input (contained in the file named in argv[1]). Then, I am opening the file, reading character by character, if there is a new line ("if (token == ' ')") keep track of this line number and store it in a vector to access it later. Next it breaks it into a sequence of words (using any character other than a digit or an alphabetical symbol as the terminator). This is where I'm getting an error. I am then trying to add each character to a string and then when the token is a digit or an alphabetical symbol, then push the string into a vector so I can access it later. Is my logic right? error when pushing each word into a vector.
BinarySearchTree buildTree (char *argv[]){
ifstream file;
vector<char *> V;
int line = 0;
[Code]....
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Oct 11, 2013
You are to create a program that will read 50 integers from a file and sum them together. Output this sum to an output file. You will also output (to the file) how many numbers were odd, and how many were even (zeros may be considered even). Your program MUST employ a while loop to read the values from the file.
The while loop should check for TWO things (what are they?). Hint: you know you need to read 50 numbers, but for correct file processing, what else should you check for? Your grade will be based on whether or not you correctly identify both conditions to be used in the while loop.
Code:
#include <iostream> // Preprocessor directive for cin and cout
#include <fstream>
using namespace std;
int main () {
// Declaring variables
ifstream num_list;
int number(0), even(0), odd(0), count(0);
[Code] .....
I am getting error: no match for 'operator+=' in 'sum += num_list' .....
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Aug 2, 2014
I have a text file called (Test.txt) with the following text:
This is line one
This is line two
This is line three
How do I go about writing a program that will print a line of text (e.g. "This in line two" on the console screen?
All I can seem to do is display the entire text file.
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Aug 10, 2014
I have been trying to write this program that reads a file of courses and then stores only the unique courses in an array of strings.
for some reason it crashes while reading the 2nd line.
printf within the function are just for me trying to trace the problem.
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char** uniqueCourses(FILE *fp, int *wordCount);
int main()
[code].....
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Nov 15, 2013
While I execute the fileprint function i was able to retrieve the record from the txt file. but at the end of the console im getting randoms number i have tried to understand what causing the problem. I have attached a screenshot....
Code:
void fileprint(){ Code: int c;
struct student{
long id;
char name[20];
int mid1;
[Code] .....
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Apr 21, 2014
I'm a beginner at c++ and I need to write a program that reads a set of integers and then finds and prints the sum of the even and odd integers. The program cannot tell the user how many integers to enter. I need to have separate totals for the even and odd numbers. what would I need to use so that I can read whatever number of values the user inputs and get the sum of even and odd?
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Nov 23, 2013
I would like to see what functions the following header file has:
#include <tf/LinearMath/Transform.h>
Any website that has all the c++ libraries and where to find the functions that come with this?
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Feb 21, 2015
I have a specific byte (that is unsigned char) array, that I need to find in a very big file (2GB or so), currently I'm using:
size_t fsFind(FILE* device, byte* data, size_t size) {
int SIZE = (1024 > size) ? 1024 : size;
byte buffer[SIZE];
int pos = 0;
int loc = ftell(device);
[Code] ....
Which seems to find proper result on first use, but on subsequent searches it seems to find invalid positions, is there something I'm doing wrong, or is there a better way?
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Oct 18, 2014
I want to pass some strings and int values from a file to my program.. if i was using c i could do it like
scanf(p,"%s %s %d %d",&str1,&str2,&num1,&num2);
I don't want to get the whole line just the values one by one if i wanted the whole line i could do it with getline(); now that i want the values one by one how do i do it ...
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Oct 28, 2014
My main issue is that when I store just one value into a simple integer variable, it gives me a big negative number.
My goal is to store a file that reads like this into arrays:
2014 1 23
2012 2 15
2013 1 25
etc
Where I would have the first column in an array, the second in another and the third in third array since I am not allowed to use multidimensional.
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Jun 2, 2013
what I need is to get the first integer from a file and assign it to a variable and the others integers to an array. Example: Thats my file content 5 4 6 7 8 0 and that would be the code:
Code:
struct Array{
int n;
int *v;
}
[code]....
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