In MATLAB, how do I scan my .txt files for numbers to put in an array?

In MATLAB, how do I scan my .txt files for numbers to put in an array?

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In MATLAB, how do I scan my .txt files for numbers to put in an array?
Tag : arrays , By : Schmidt
Date : December 01 2020, 05:00 PM

fixed the issue. Will look into that further You have a bunch of text first followed by the numeric data. Reading this data as is won't work because your format specifiers are expecting floating point numbers at the very beginning of your text file, yet you have a bunch of text that isn't floating point data instead.
Skip the text first then read in the data after the text. Try doing:
OriginalData = dlmread(filename, ' ', 31, 0);

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How can i add numbers to an array using scan f

Tag : c , By : Frank Bradley
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Your code suggests that you expect that your array will be dynamically resized; but that's not what happens in C. You have to create an array of the right size upfront. Assuming that you allocated enough memory in your array for all the scores you might want to collect, the following would work:
#include <stdio.h>

int addScores(int *a, int *count) {
  return scanf("%d", &a[(*count)++]);

int main(void) {
  int scores[100];
  int sCount = 0;
  int sumScore = 0;
  printf("enter scores followed by <return>. To finish, type Q\n");
  while(addScores(scores, &sCount)>0 && sCount < 100);
  printf("total number of scores entered: %d\n", --sCount);
  while(sCount >= 0) sumScore += scores[sCount--];
  printf("The total score is %d\n", sumScore);

How do I scan in numbers to an array from a file?

Tag : c , By : jsmb
Date : March 29 2020, 07:55 AM
this will help You cannot add the > 0 condition: this would give you undefined behavior. In order to ignore the negative one, you could add a separate check inside the loop, after reading the number, like this:
while (scanf("%d", &arr[n]) != EOF) {
    if (arr[n] > 0) {
while (n < 100 && scanf("%d", &arr[n]) != EOF) {
    if (arr[n] > 0) {

Algorithm to scan an array of numbers, and count how many are between a range (0 - 24)(25 - 49) etc

Tag : cpp , By : RinKaMan
Date : March 29 2020, 07:55 AM
To fix the issue you can do New Member to the site, but an active searcher of the site to find answers. , You got confused about the comparison:
target = (( target >= x)&&(target <= y));
int count(int x, int y)
    int numOf = 0;
    for(int cntr = 0; cntr < students; cntr++) {
        if( list[ctr] >=x && list[ctr] <= y ) numOf++;
    return numOf;
int counts[8] = {0};
for( int i = 0; i < students; i++ ) counts[list[i]/25]++;
void output( ostream & s ) {
    // etc...
if (qMenu2 = 1)
} else {

Scan files in a Directory - MATLAB

Tag : matlab , By : Xander
Date : March 29 2020, 07:55 AM
help you fix your problem D'oh. Your first statement in your for loop should be outside of it. You want to find all files first, then loop over each file. You're doing that inside your loop statement, and that will probably not give you what you want.
You also are using load wrong. You'd want to use the actual string of people_name itself. You also will want to loop over all possible file names, not just the first 8:
people_names=dir('~/Desktop/Directory/Data/*.mat'); %// Change

for jj = 1:numel(people_names) %// Change

    resp=load(people_name); %// Change

    %// Rest of your code here....

I want to scan through a txt file and save those numbers in an array

Tag : c , By : Joe
Date : March 29 2020, 07:55 AM
this will help You need to check if the file was opened and if input has been read. You also need to stop reading if the file ends prematurely.
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(void)
    const char *filename = "BesselFunction.txt";
    double ZeroBesselFuncTM[20];
    double zero;
    int i, j, n;
    FILE *constant;

    constant = fopen(filename, "r");
    if (constant != NULL) {
        i = -1;
        do {
            n = fscanf(constant, "%lf\n", &zero);
            if (n == 1) {
                ZeroBesselFuncTM[i] = zero;
            } else if (n == 0) {
                fprintf(stderr, "Invalid input\n");
        } while ((i < 20) && (n != EOF));
        for(j = 0; j < i; j++) {
            printf("%0.4f\n", ZeroBesselFuncTM[j]);
    } else {
        fprintf(stderr, "Cannot open file %s: %s\n", filename, strerror(errno));
    return 0;
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