I need to do a program that reads a file, that contains something like this:
8 2 3 4 2
5 6 1 3 4
3 1 4 6 7
7 2 4 1 3
3 2 1 6 8
and put in a array[][] in the program..I did this:
int main(){
using namespace std;
int size=0;
char line[1300];
FILE *file;
char path[50];
int l=0,c=0;
[code].....
But when i print A[3][3], it does not contain the correct value, but I strange value, like -36893488147419103000 .My idea was to pass line by line of the file, including the values that were not " ", to get only the numbers.
So the premise of my code is to read in a 2d array from a .txt. The array is a game board but the first two lines are what determine the size of the board. After i read it in i want it to find wherever te character "U" is, and then display the array but only showing U and whats around it. Problem is i cant get the array to print the right size and the code for displaying the U is not working either.
ifstream inputFile; int boardSizeRow; int boardSizeCol; inputFile.open("C:UsersMichaelDesktopfileboard2.txt"); inputFile >> boardSizeRow; inputFile >> boardSizeCol; inputFile.get();
[Code]...
FILE:
20 20 WWWWWWWWWWWWWWWWWWWW W GO W W W WW w S W W H W GW w W WPW WW G W WK W W W W W W w w W WK WU W SW w w W W W w W G W G W w W D wwwww W K w D W w w W w w W ww w WWWWWWW G w W ww w S w W WWW G W WWWWWWWWWWWWWWWWWWWW
In a program, I have a text file (called MyDictionary.txt) which has thousands of words in alphabetical order. I need to make a C program that reads in this text file and then makes an array called char Words[# of total words in the text file][length of longest word].
I am currently working on a problem where I read a file into a 2D array, and display data. If you saw my code earlier, this is the same problem, but I am now further along.
The file (90 characters) looks like this: S R R S R R R R S S ....
The "R" resembles rainy days, the "S" resembles sunny days, and the "C" resembles cloudy days. There are 90 characters in the file. The first 30 are for the month of June, the next 30 are for the month of July, and the last 30 are for the month of August. The 31st day of the months are NOT included.
I read the data into a 3 x 30 array, where the row indicates the month (0 = June, 1 = July, 2 = August) and the column indicates the number of days in each month.
Now I need to create a function that creates a report and displays, for each month AND for the whole 3 month period: 1) The number of rainy days 2) The number of cloudy days 3) The number of sunny days 4) Which of the 3 months had the largest number of rainy days
Here is my code so far:
#include <iostream> #include <fstream> #include <string> using namespace std; const int MONTHS = 3;//Number of months
[Code] .....
There are no compiling errors, but I am not getting the data I want. My rCount and cCount variables end up being 0, and my sCount variable is 90.
Assume you want to read from a file and place the data from the file into an array. The array can hold 10 integers. The file may contain any number of integers with 1 integer per line. Fill in the missing loop test condition so that we will read from the file until either end of file occurs or the array is full. Note we are using cin to read from the file since input redirection is being used.
i have to read a file with between 5 and 10 pairs of numbers, each on a different line. i can read the file, and wrote something to save the length of the file as a variable, but when i use it i start returning crazy data. the problem is in the do while loop and i want to change the i< in the for loop to "lines" so the code stops when the last digit is read. if i use i<10 the file has extra digits is the file is only 8 or 5 pairs of numbers.
FILE *Fpointout; FILE *Fpointin = fopen ("test.txt","r"); //read this one Fpointout = fopen ("out.txt","w"); //write this one if (Fpointin == NULL) //if no file in source { printf ("File does not exist."); //tell user it is not there
/part of main function int *A=NULL; //load from file load_from_file(A, &next); printf("next=%d ",next); getchar(); printf("A[%d]=%d ",0,A[0]);getchar();//here program crashes }
[code]....
I initialize array A with NULL in main, and I "load" it with elements from a file. The code without function is working. But when I tried to use a function as above, my array crashes!!!
I am new to C++ and I am having an issue reading in a 2 Dimensional array from a data file. I am very close to reading it in perfectly except for one issue, the loop is ignoring the first value from the data file.
I am suppose to make a program that reads in data from a text file (integers only) and sorts them as it inserts them into an array of size 10. I did this using an insertion sort, which worked great. But now I am being told that I need the function has to read ALL of the numbers in the text file, not just the first 10, and I am not allowed to store them THEN sort, it has to be sorted as being stored.
I am having problems figuring out how to place a list of strings from a text file into a multidimensional array that is something like words[NUM_WORDS][MAX_LEN]. I already run through the file once and count the number of words in it. I have tried a number of loops using fscanf and fgets, but I'm not sure if I am using them right -- this is my first time using them. The text file is a list of words in a dictionary, so the wordCount is about 45340.
Here is my code:
#include <stdio.h> #include <string.h> #define MAX_LEN 46 int main(){ int wordCount = 0; FILE *inputFile, *outputFile;
[Code] ....
Like I said, the wordCount portion works. I added the printf statements at the end to see if anything was being saved, but it just prints two new blank lines. New to file reading and writing.
I tried to make the program read from a file text the first name or last name but o cant seem to get it. i tried alot of different ways. how can i get the array of structure code to read form a file?
#include <iostream> #include <fstream> #include <string> #include <cstdlib> using namespace std; const int NUM_STUDENTS = 17; const int NUM_QUIZZES = 10; const int NUM_EXAMS = 5;
I have been trying to read a comma separated .txt file into an array and print it to console in C++. The txt file consists of two columns of double type data. For some reason the program runs, but gives blank output in the console. I want to know if I am doing something wrong. So far this is what I have:
#include <iostream> #include <fstream> #include <string> using namespace std; int main() { int i=0; double x[10]; double y[10]; string line;
I am trying to read from a data file that has input as :
12.0, 11, 123 14.0, 12.1, 3
And I want the program to read the data from the file and then make it into an array of structures and then print that array afterwards.
Code: #include <stdio.h> #include <stdlib.h> #define MAX_INPUT 1000 int n =0; int i = 0; typedef struct { double x[MAX_INPUT];
[Code] .....
The program when run gives the following output:
Ishtiaque-Mohammed-Khans-MacBook-Pro:Comp20005 IshtiaqueMKhan$ gcc -Wall -ansi -o ProjectB ProjectB.c ProjectB.c: In function "main": ProjectB.c:59: error: incompatible type for argument 1 of "print_array"
I would like to write a complete structure array to a file and read it back, recovering all the data. I have tried the following:
Code:
#include <stdio.h> #include <string.h> #define NUM 256 const char *fname="binary.bin"; typedef struct foo_s { int intA; int intB; char string[20];
[Code]...
//---------------------------------------------------- but the mac field is reading back some random value repeatedly. Why is that? And how do I fix this?
I want to read the contents of a file block (512 bytes) by block using low I/O read statements. Each record is 64 bytes long and has a pre-defined structure. The first 4 bytes are an unsigned integer; the next 20 bytes are ascii text, etc.
I have a buffer which I can access with buf[0] to buf[63] to read the first record and then buf[64] to buf[127] for the second, etc. However, I was wondering how to map a record so that I can refer to an integer as an integer and a float as float, etc. I can't create a struct and move the 64 bytes to it, as I will have alllignment/padding problems.
What is the standard way to deal with records in C?
im trying to read in 1 array and get 2 as outputs from 3 different functions.my read array is easy enough were im getting confused is how to read that array, separate it and take out only the parts i want and place them into a 2nd, then again a 3rd array.i have the following so far:
this compiles without a complaint, but when i go to run it no longer responds after taking the 10th element (well 9th if counting from 0).I think i have the if correct for the even odd section, but when i try to populate B or C array with the output of that if statement from A is were i think things are dying...
The Objective Of This Program Is To Create A File To Write Text And Read Back The File Content. To Do That I Have Made Two Function writeFile() To Write And readFile() To Read.The readFile() function works just fine but writeFile() doesn't.
How writeFile() function Works? when writeFile() function Execute It Takes Characters User Type And When Hit Enter(ASC|| 10) It Ask "More?(Y/N)" That Means What User Want? Want To Go Next Line Or End Input?
If "Y" Than Inputs Are Taken From Next Line Else Input Ends.
But The Problem Is When Program Encounters ch==10 It Shows "More?(Y/N)" And Takes Input In cmd variable.If cmd=='Y' I Mean More From Next Line Than It Should Execute Scanf Again To Take ch I Mean User Input.But Its Not!!! Its Always Showing "More?(Y/N)" Again And Again Like A Loop.
Code: #include <stdio.h> void writeFile(void); void readFile(void); int main(){
