How do I put the records from the random access file DATA.data into the array allRecs[10]?
/*Reading a random access file and put records into an array*/
#include <stdio.h>
/* somestruct structure definition ...
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I want to do the inverse of this question.
I am embedding a file into an executable as an array, and I would later like to extract the embedded file from ... |
I am trying to find how to store and process (search, add, remove) an array of linked lists on disk. For example in memory, it would like
struct list {
int a;
...
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What's wrong with the following code?
#define DELAY_CYCLES ((int)(0.1/0.001))
typedef struct {
double state_history[N_X][DELAY_CYCLES];
double foo;
} foo
gcc complains:
main.h:52:3: warning: variably modified 'state_history' at file scope
Is ... |
main ()
{
FILE *pRead;
FILE *pWrite;
char lastname [20];
...
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I am trying to get the ARP table in Linux to an array with code posted below. I always get the addresses in the variables ip and mac, but when assigning ... |
I need to collect some data from different .a files to one array.
I do it by collecting data to one section
first .c file
TArElement __attribute__((section(".my.special.section"))) uwiveuve = { ...
second .c ... |
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Look at this piece of code..
In this I am taking input from a file and assigning to an array sudoku[][].. and simultaneously assigning those values to TempArr[][] (another array)..
But when ... |
Perhaps this bridge likely has been crossed many times and in many ways... reading a simple text .conf file and acting upon its entries.
In my case, the file format is simple.. ... |
I have some simple static array defined in c-file (const int data_input[1024];)and I need to access it from my assembly code. What's the right way to do it?
So far, I've been ... |
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Hi there. I have been given an assignment to do which counts towards my final grade but I'm struggling quite badly with it. THE TASK Write a program which reads 10 numbers from a file indata.txt, finds the minimum and maximum value, and writes them out to a file result.txt within a message. For example, if the content of indata.txt is: ... |
i understand your problem first put the if statement of streamin after the line where you say streamin.open, and don't use the if statement of streamout until u define which file streamout is going to use. your other problem is with getline you are entering the number 100 as one of the parameters, which means 100 chars from the file. and ... |
hii all, i would like to know the way in which an array of numbers is stored in a file. what is the format in which they are stored.if it is a bmp file then how do the numbers get stored in the file.please give me a clear picture of the format. thanku. it is better to start with .pgm format. ... |
Hi every one I have an Assignment which due to tomorrow 6:00 p.m GMT; while (and I am new in programming with C so){ I need a lot of help; } the required program is as following: Develop a C program that has a structure for a list of students that has the array of students and the number of students. ... |
i got a little proble to implement memory allocation using array. Here's the situation, i got a sample data stored in textfile: tri1 (1,7,1) (2,8,2) (3,7,3) tri2 (2,8,2) (5,7,5) (3,7,3) tri3 (5,7,5) (3,5,2) (3,7,3) tri4 (3,7,3) (3,5,2) (1,7,1) tri5 (5,7,5) (5,5,7) (3,5,2) it is a triangulation table.. so later i'll plot it as a triangle.. i would like to read the ... |
5 TTTFF 9234 FFFTT 2345 TTTTT 4567 FFFFF //Philip Nguyen //fatguyinalilcoat@gmail.com //Lab 1 Mini Scantron #include #include #define MAXSTUDENTS 50 #define MAXQUESTIONS 100 int getKey(FILE*,char [], int numberTests); int main(void) { FILE*fpIn; char key[MAXQUESTIONS]; int studentID[MAXSTUDENTS]; char studentAns[MAXQUESTIONS]; int numberTests; int count; fpIn = fopen("dataminiscantron.txt","r"); if( fpIn == NULL) { printf("No such file"); exit(100); } fscanf(fpIn," %d",&numberTests); count = ... |
Hello everyone, I am trying to call a text file as an array in the program, that can have up to 100 rows and three column. When I tried to do so, I was only able to call the first line. Can anyone help me to find a way to call all the lines? My data file is as below. 2 ... |
Hello i'm currently working on an i/o file dealing with arrays, basically I have to get the information from an input file get the sum and the average for each row and then get the sum, average, and standard deviation for each column. I got the rows down but i'm having a lot of trouble with the arrays since I barely ... |
#include #include #include "search.h" #include "filereader.h" int main () { FILE *ifp; ifp = fopen("test.txt", "r"); int index, size, number, x, i; printf("What number do you want to find?: "); scanf("%d",&number); size = 0; i = 0; while ((fscanf(ifp, "%d", &x)) == 1) { size++; i++; } int *num = malloc(size * sizeof(int)); FileReader(ifp, num); for(i = 0; i ... |
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#include /* Loads data from file into arrays */ void loadData(int stu[],char name[][20],double t1[],double t2[], double a[], double labs[], double exams[]) { int i; FILE *fp; fp = fopen("student.txt", "r"); for (i = 0; i < 9; i++){ fscanf(fp, "%d,%c,%lf,%lf,%lf,%lf,%lf", stu[i], name[i], t1[i], t2[i], a[i], labs[i], exams[i]); printf("%d,%c,%lf,%lf,%lf,%lf,%lf", stu[i], name[i], t1[i], t2[i], a[i], labs[i], exams[i]); } fclose(fp); } main () { ... |
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I need to get the first number from the file as it gives the maximum elements of the array and then print the arrays. The file is called expt1.txt and contains the following 3 7 4 8 7 9 9 Where 3 is the maximum elements in the array and the left column is the first array which I have called ... |
I have a program that is supposed to decode a message from a text file. The coding for the decoder is done, but I'm at a loss as to how to import the text file that contains the message. After scouring the internet and using the greatest extent of my own google-fu abilities, I have found many threads and topics where ... |
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I having trouble with a programme im trying to write I have it so it asks for a file name, opens that file if it exists or comes up with error message if it doesnt. But what im stuck on it how would i get the content of that file put in to an array or into variables for example in ... |
#include #define LEN 10 int main(const int argc, char** argv) { FILE* fd = 0; if ((fd = fopen(*(argv + 1), "r")) == 0) { printf("[Error] While opening [%s] file\n", *(argv + 1)); } else { char * str = (char*)malloc(LEN); memset(str, 0, 10); while (fgets(str, LEN, fd) != 0) { printf("%d\n", atoi(str)); } } return 0; } |
Hi, on my job we need to dump the content of an array ( for debug purpose ). As i'm not a very experienced programmer, i tried to code something generic ( Yes i read it here: write generic code ) This is what i have so far: Code: /* * Dump content of array into file, by A.lam */ #include ... |
int main(int argc, char *argv[]) { int numberOfChar; FILE *fp; fp=fopen("test.txt", "rb"); if (fscanf(fp, "%d", &numberOfChar) == 1) printf("%d\n", numberOfChar); int x[numberOfChar]; int s; for (s = 0; s < numberOfChar; s++) { fscanf("%d", &x[s]); //Type error in argument 1 to 'fscanf'; found 'char *', expected 'FILE *'. //Type error in argument 2 to 'fscanf'; found 'int *', expected 'const char ... |
Well that would involve having code in your program to read from a file that you then have to cart around with the executable. I'm specifically referring to the linker phase of program construction. I would like it so that the only thing about the array that the compiler evaluates is that it is n bytes long (if that is necessary), ... |
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FILE *readinstructions; printf("Loading the file which contains the instructions... "); if ((readinstructions=fopen("instructions.txt","r"))==NULL){ printf("\nError: Cannot open the instructions.txt"); } else printf("successful"); i=0; while ((character=fgetc(readinstructions))!=EOF){ instruction_name[i]=character; i++; } fclose(readinstructions); FILE *readregisters; printf("\nLoading the file which contains the registers..."); if ((readregisters=fopen("registers.txt","r"))==NULL){ printf("\nError: Cannot open the registers.txt"); } else printf(" successful"); i=0; while ((character=fgetc(readregisters))!=EOF){ register_name[i]=character; i++; } fclose(readregisters); |
C Programming Help - Using Arrays and Files Hi I would like some help on a programming problem, I'm new to all this and I'm new to the forum so I'll try my best to make this question easy to answer as possible. I've done everything to get through this problem but I just don't know how to do it, basically ... |
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int main( void ) int ResisA[3]; int ResisB; int TempsA[3]; int TempsB; FILE *secretFile = NULL; int counter; int main( void ) { secretFile = fopen( "table.txt", "r" ); if ( secretFile == NULL ) return 0; for ( counter = 0; counter < 10; counter++ ) { if ( fscanf( secretFile, "%d", ResisB ) == EOF ) break; if ( ... |
#include /* for realloc(), free() */ int *array, x, *p; size_t arraylen = 0, n; while(fscanf(fp, "%i", &x)) { p = realloc(array, (arraylen+1)); if(!p) { free(array); perror("Out of memory"); exit(1); } array = p; array[arraylen++] = x; } for(n = 0; n < arraylen; n ++) { printf("%i ", array[n]); } free(array); |
-------------------------------------------------------------------------------- Hi, how can i write a C program in Red Hat 9. I can't find a compiler. Also would you mind looking at this code and telling me if you think its ok. I need to put a file which has many columns of data (of which i only need the first two) into an array, so that i can ... |
41. Array-File cboard.cprogramming.com |
42. File > Array cboard.cprogramming.comint ViewJournal(){ FILE *fp; FILE *fp2; int Counter2=0, Counter=0, b=0; int Account[MAX_ITEMS]={0}; char Description[MAX_ITEMS][31]={0}; char TransType[MAX_ITEMS]={0}; double Amount[MAX_ITEMS]={0}; char AcctDescription[MAX_ITEMS][31]={0}; fp = fopen("tr.dat", "r"); if (fp != NULL){ while (fscanf(fp,"%d[^;];%30[^;];%30[^;];%2[^;];%lf[^;\n]%*c", &Account[Counter], AcctDescription[Counter], Description[Counter], TransType[Counter], &Amount[Counter] == 5); counter++; } fclose(fp); } else { printf("\n ERROR: FILE NOT FOUND!"); } fp2 = fopen("gj.txt", "w"); fprintf(fp2,"\n\t\t\tGeneral Journal"); fprintf(fp2,"\n\t\tAccount\tDescription \tDebit\tCredit"); fprintf(fp2,"\n\t\t-------\t-------------\t-----\t------"); for (Counter2=0;Counter2 |
Well i did make a quick search throughout the forum for an answer ..iam sure there is one somewhere..maybe iam not so good at searching...anyway here is my question...I think iam fairly good at c++ but lately i've decide to learn c as well...why not? so i've decided to port one of my programms..but iam stuck (it is obvious i suppose) ... |
i am new to programming and am struggling with a homework project. Please help Here are the requirements need a program to store account information of a bank need to store id, one-word name, current balance. i need to read transactions from a file. typical transactions look like this 1234 jon 123.45 4001 jake 1005.50 i have a few rules to ... |
#include #include void main (void) { int i, j, k, num_elem; double tax, x[9], y[9], z[9]; FILE *outfile; printf ("Type in your ten incomes\n"); outfile= fopen("a6q1.out","w"); scanf ("%lf", &x[0]); fprintf (outfile, "Value of EOF = %d\n", EOF); while (x[i] != EOF) i++; num_elem = i; fprintf(outfile,"x[i]\n"); for (j=0; j |
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#include int main(void) { FILE *file; int array[100] int read = 0, int i, num; if ((file = fopen("paf1.txt", "r")) == 0) { return 1; } while (fscanf(file, "%d", &num) == 1 && read < 100) { array[read++] = num; } for (i = 0; i < read; i++) { printf("%d ", array[i]); } fclose(file); return 0; } |
Look at the function HandleEncrypt()... The look even closer at the while loop that is there... What am i doing wrong here. I am trying to open a file then read the contents of the file to Contents[] so that i can later change the contents. Then i am printing the contents to the screen... The program compiles fine but that ... |
#include int main(void) { char array[20][20]; int c; FILE *fp; if ((fp = fopen("test.txt", "r")) == NULL) { perror("test.txt"); return (1); } while ((c = fgetc(fp)) != EOF) { if (c != '\n') { putchar (c); // add c to the array or whatever you want } } fclose(fp); return (0); } |
My program needs to read double numbers from an input file and store them in an array. I've written the code and tested several functions using an array in the main program. Now I need to adapt the program to read from a data file. Any help would be greatly appreciated. Here's the code... #include #define MAXEL 10 double find_max(double ... |
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Code: //Casey Weaver //C12P7 //Student Average Calculator using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.IO; namespace C12P7 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { string input; string[] test = new string[4]; ArrayList name = new ArrayList(); ArrayList grade1 ... |
So I'm having real issues trying to figure out how to work file inputs and outputs and how to work arrays. I was hoping ya'll could give me a few pointers. I'm just gonna go at this in steps though because I want to do this in manageable steps. The first thing I'd like to do is figure out how to ... |
Hello, I have a data file called nouns.txt which has a list of nouns going straight down like: book phone cat dog etc. i need to read this data file into an array so that i can then apply a random number generator. This is the code i have so far but i dont believe i am doing it correctly, I ... |
#include int main ( void ) { static const char filename[] = "file.txt"; FILE *file = fopen ( filename, "r" ); if ( file != NULL ) { char line [ 128 ]; /* or other suitable maximum line size */ int i = 0; while ( fgets ( line, sizeof line, file ) != NULL ) /* read a ... |
Ok, this question may need a little knowledge about PPM (Portable Pixmap File) files. This code should load a PPM file to 'image_2d_array' but it won't because of a segmentation fault. Check debug area and you'll see that the two methods to calculate pixels number will return two *very* different results. Can this be caused by an invalid file (I gues ... |
#include #include #include using namespace std; int main() { ifstream in,in2; ofstream out; in.open("file1.dat"); in2.open("file2.dat"); int array1[10],array2[10],array3[20],i=0,j=0,x=0; for(i=0;i<10;i++) { for(j=0;j<10;j++) { while( (!in.eof()) && (!in2.eof()) ) { in>>array1[i]; in2>>array2[j]; { if (array1[i] |
I don't understand your question, I guess. If you don't memory map a file, but just read it into an array, you can access the information as an array. It goes without saying (I hope) that the array has to be large enough to hold what you try to stuff into it and that you don't access any elements beyond its ... |
You only mentioned the one error. If you've changed to "#include " and are still getting that error, you need to post your code again, as it exists now. Read the Commonly Asked Questions at the top of the forum for some material on opening, reading, writing files. There are methods for C and C++ as well as low level. Be ... |
where does the C code start after all the lines of numbers have been made and how do you connect the code for it to utilize the set of numbers? also, what is the C statement to create new files or 'forward' the output to a particular file that has been already made? my questions are regarding the following these general ... |
The text files contains the following information. 123456789010178Bose Mitch KY 987654321123177Brad Nicholas KY 234567891110199Poetic Wacks IL 891234567022800Raj Victor TX 789123456030102Benedict Arnold IL 345678912102200Hanks Timothy CA 678912345061201McKenna Geotge TX I have tried to go about this about 100 different ways. Here is the last code I wrote: #include #include #include #include #include using namespace std; int main() ... |
I am having problems getting a piece of my code to work. I am loading a set of strings into a 2 dimensional char array. This appears to be working fine, until the last string which loads and then crashes the program. Here is the function that I am having trouble with: Code: int load_container() { FILE *fp_container; int index = ... |
fpdata is just a pointer to the file you have opened. It is a stream. You have taken nothing from the stream. You cannot expect the file to read and distribute itself this week. I have renamed "fpdata" to "theFile" to keep this uppermost in your mind. There are a number of ways to read the file. This is a simple ... |
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Is there going to be one number per line? There many different ways to do it. I'll list two that come to mind. One way is to read the data in just to count how many elements there are and then allocate an array that is that size. Then you read it in "for real" into that freshly allocated array. The ... |
Use fgets in a while loop. When fgets() returns NULL, then you have reached the end of the text file. Aha! Inside that while loop, fgets() will put each line into your char array, which must be large enough to fit all the names into for ONE line. (for even the longest row, plus 1 for the end of string char ... |
char seed[100]=""; char seed_array[100][100]; int main(int argc, char* argv[]) { count=0;//count d number of seeds for (int i = 1; i < argc; i++) { /* Check for a switch (leading "-") */ if (argv[i][0] == '-') { /* Use the next character to decide what to do. */ switch (argv[i][1]) { case 's': strcpy (seed,argv[++i]); seed_found=true; strcpy (seed_array[count],seed); count++; seeding(); ... |
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I have a class with members, I am storing the members in a CArray, if I add a member to the class the program doesn't recognize my previous stored file. It says "unexpected file format". I can create a new file with the new member, but I want to be able to reformat my previous file with the new format of ... |
My knowledge of C is limited and for the task I am trying to do I cannot use Korn shell. Given that, how would I get a list of files into an array and print them to the screen and give the user a choice of which one to choose to delete.Example:If there was a core file in /home /tmp /usr/WebSphere ... |
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