How do I get c++ to read a file containing six numbers - a1, b1, a2, b2, a3, and b3 - that are constants for the following equations:
clubangle(degrees) = a1 + b1*0.85*clubnumber
clublength(inches) = a2 + b2*1.05*clubnumber
clubspeed(yards/s) = 1.1 * (a3 + b3 * swingnumber) * (clublength(inches)/40)^2;
I am attempting to read in a file that has 4128 sets of 21 numbers separated by commas and write it into an array. I now know that in order to use fseek, I have to make my array a character array, but I need my function to read in decimals (ex: 0.172635). I'm reading in
0.102598,0.000000,0.000000,0.000000,0.000000,0.307 793,0.000000,0.410391,0.102598,0.000000,0.102598,0 .102598,0.000000,0.000000,0.102598,0.102598,0.8207 83,0.000000,0.000000,0.000000,0.000000
and keep getting numbers like 48 49 50.
Code:
void CSread(char filename[100], char array[22], char array2[22], unsigned int arraysize)
{
char genename[32];
double temp = 0;
FILE *CSfile;
CSfile = fopen(filename, "r");
");
[code].....
My code is working all except one part I'm just completely stuck on and it's probably something simple. There are 14 numbers in the file. The way I have the code now it will tell me there are 14 which is correct but it displays my low number as 0 and it should be 6. If I change if(infile) to if(infile >> num) it will read the correct low number as 6 except now it says there's only 13 numbers and it's not reading the first number in the file which is 23 so it skews the whole program.
#include <iostream>
#include <fstream>
/*This program pulls numbers from a file and displays various information such as the sum of the numbers, average, highest and lowest. */
using namespace std;
int main() {
ifstream inFile;//Declare the variables including the input file stream.
[code]....
This is supposed to read a series of 16 bit binary numbers as short ints in the array memory. However, it only appears to be reading the first number.
Code:
short int memory[256];
void readFile(){
//read input file into int memory[]
FILE *ifp;
ifp = fopen("proj1a.dat", "r"); //input file
[Code] ....
The program runs fine but i just want it to read the inputs from a text file rather than user manually entering it! what changes should i make in the codes..
Code:
#include<iostream.h>
#include<stdio.h>
#include<conio.h>
#include<math.h>
float friction,flow;
[Code] ....
I think it comes from having to align the data in the output file. How to start this is to use a function to read in all the characters using a while loop. Then read in all the digits in a separate function. When it comes to outputting the data in the correct format I'm lost, so for now if I could figure out the functions that would be awesome. A final note we have not gotten to using strings so the I'm trying to use getc, fgetc, and ungetc.
Write a program to compute average grades for a course. The course records are in a single file and are organized according to the following format: Each line contains a students first name, then one space, then the students last name, then one space, then some number of quiz scores that, if they exist, are separated by one space. Each student will have zero to ten scores, and each score is an integer not greater than 100. Your program will read data from this file and write its output to a second file. The data in the output file will be the same as the data in the input file except that there will be one additional number at the end of each line: the average of the students ten quiz scores.
The output file must be formatted such that first and last names appear together in a left justified column that is 20 characters wide. Each quiz score should be listed in a right justified column that is 4 characters wide, and the average should appear in its own right justified column that is 10 characters wide.
Note that if a student has fewer than 10 scores, the average is still the sum of the quiz scores divided by 10; these students are assumed to have missed one or more of the quizzes. The output file should contain a line (or lines) at the beginning of the file providing appropriate column headings. Use formatting statements to make the layout clean and easy to read.
I need to open a file that has multiple lines that look something like this, " black box 100.01 33.5 78.93". What this shows is the coordinates of the black box. Lines will have different objects with different coordinates. I need to create a loop that will read this file and tell me when a black box is found by displaying a message. I don't need to know how to create this file. I don't need to display the entire file but rather have it search for black boxes.
View 3 Replies View RelatedI wanted to know if it is possible to read binary numbers(0's and 1's) from a file(text,picture, anything), and see them in the compiler.
View 14 Replies View RelatedI am reading certain int's at a time from one int number stored in a file. I'll explain. I am working on an ezpass project and basically I have to store an int in a file, and from that file, write a program that separates numbers into information.
For example:
the number 204601324 is stored in a file. I know how to open a file from terminal, but the issue is reading the individual numbers. The first number is weight class (2). My program has to display that number as the Variable "weightClass." how do I get it to do that? In addition, miles allowed is the number "0460." How do I get that number to display as the variable "oMiles?"
I am trying to read numbers stored in a txt file to populate an integer array. The problem is that the numbers read from a file have to be treated as strings and then I am not able to put them in an integer array.
I tried the stoi function to convert the string in 'box' into an integer but I am getting an error.
Code:
#include <iostream>
#include <stdlib.h>
#include <fstream>
#include <string>
using namespace std;
int main() {
int amount=10;
int k[amount];
[Code] ....
If i have a data,how to write the code for read this data?
View 1 Replies View RelatedI'm having issues reading to a 2d array from a file. When I try to read the data from my file into my matrix variable it simply doesn't read anything and leaves the variable unmodified. I've tried just reading the first piece of data in the main function and it doesn't work there either. I'm really perplexed at this point since I've never had an issue reading from a file before. Here's my relevant code:
Code:
int main(int argc, char** argv) {
double matrix[MINSIZE][MINSIZE]={0}, vectors[MAXSIZE][MINSIZE], ans[MAXSIZE][MINSIZE];
FILE * inFile;
inFile = fopen(FILENAME,"r");
if(inFile==NULL){
printf("File does not exist.
[Code] .....
I am working on a small c++ project where i read from a csv file with information in this format:
string,string,int
string,string,int
string,string,int
And all of the above information is one person. As is "John,Peter,23" is first name, last name, age. When there are multiple people in a csv file how can i parse through and separate the information in a string and int for later use?
Im familiar with fstream and know how to read in data, given that there is one type per line.
But I have a file that has multiple lines each containing a string (an address) and two double values (latitude and longitude).
Looking for support with the logic part of reading in data and initializing them to member variable.
I can't get my program to read the rest of my variables from my data file it will only read the first two and my end of file won't work it keeps continuing on.
879.46
C 400.00
D 100.0
F 525.00
C 450.00
D 500.00
D 1000.00
C 2000.00
D 3000.00
D 3500.00
C 5500.00
C 500.00
B 200.00
C -235.00
D 250.00
H -500.00
D 500.00
E
That's my data it will only read the inital number and C and D but nothing else.
// develop algorithm to balance checking account make transactions
#include<iostream> // required for keyboard and screen I/O
#include<fstream> // required for external file stream
#include<iomanip>
#include<conio.h>
#include<string>
[Code] ......
I have been experimenting with a program that loads WAV file and tries to read 1s and 0s from audio file (binary coded information). So far I got working code, but the problem is that I'm not getting correct data. I do get somewhat similar data. The problem is that I get data that amplifies low amplitudes, so instead some noise and binary data I get lots of noise and hard to recognize binary data. My code is this
#include <stdio.h>
#include <iostream>
#include <math.h>
using namespace std;
// An unsigned char can store 1 Bytes (8bits) of data (0-255)
[Code] .....
This is wav file in binary viewer (after header)
0030 0032
00300035003200320035003A0048004A
004C0049004A00510049004300360038
and translated to decimal
48 50
4853505053587274
7673748173675456
and this is output from "wavosaur" program (and this one is correct)
0.001465
0.001526
0.001465
0.001617
0.001526
0.001526
0.001617
0.001770
0.002197
0.002258
0.002319
0.002228
0.002258
0.002472
0.002228
0.002045
0.001648
0.001709
You can see it's not the same. I do get the same data like I do from binary viewer, but I don't understand how they are translated to amplitude value. ? Where is the catch?
So this is not really question about c++, but about wav file structure and reading data.
I wanna read data from txt file with space divided each value like
1.00518 2.01903 3.01139 4.01343 5.02751 5.99913 7.00011 7.99851 8.99506 9.98015 10.9901 11.992 12.9923 13.9932 14.996 16.0034 17.012 18.0255 19.0366 20.0485 21.0505 22.0664 23.0455 24.0383 25.0374 26.0439 27.0378 28.0376 29.0576 30.066
I know the size of the data is 2*500.
In matlab I can use like
fid = fopen('example.txt');
data = fscanf(fid,'%f,',1499500);
how should I write in C++?
I've got a problem with reading my file data but before I explain it I'll give some background. I'm programming a 2D Platformer using the SDL library for rendering.
My problem is that when reading in the data from the file it ignores all the data and just skips to the end of the function, I've attempted to debug it and the load function is getting called, the file is in the right directory and is being opened.
Here is my code:
Level.h
#include <vector>
#include <map>
#include <string>
#include <iostream>
#include <fstream>
#include "gameobject.h"
#include "miscobject.h"
struct LevelData {
// Multimap Prototype
[Code] ....
I'm not sure if it's the way I'm using multimaps. I should have mentioned that I put a break point in the multimap loops where it writes and inserts the objects and it doesn't seem to be hitting the functions, this is why I think there's something wrong with the multimaps.
read some information from a text file. The program I'm working on is like a simple betting program.
What I need to read are:
match_code - team1 - team2 - odd1 - odd0 - odd2
139 Atletico Madrid - Real Madrid 2.853.40 2.35
But the spaces between datas are not known. We only know that both team names may contain more than one word and there is one space, exactly one dash and one more space (" – ") between team names.
Also match_code is an int and odds are double values.
while(getline(input, line)) {
istringstream ss(line);
ss >> match_code >> team1;
string temp;
while(ss >> temp) {
[Code] .....
In that missing part, I need to get the second word of team name if there is one; and the three odds that are odd1 odd0 and odd2.
Each line of the text file has first name, last name, and a salary. Something along the lines of this:
john doe 4000
bob miller 9000
I want my program to take the first name, last name, and salary of each line and assign them to strings. I have tried this so far:
while (inFile){
inFile >> firstName;
inFile >> lastName;
inFile >> grossPay;
cout << firstName << " " << lastName << " " << grossPay << endl;
}
When it outputs the names and the salary, the last line of the text file gets output twice by the program.
I need debugging the code provided below, which reads data from a file and puts it into several vectors.
Something very strange happens: if I try to read the file up to the last line, I get an runtime error, while if I try to read the file up to the second last line, I do not get the error.
However, if I try to read the file up to the last line, it READS IT CORRECTLY, as you can see that it prints out the right values.
Following there is the code and the file that I am trying to read.
Code:
#include<stdio.h>
#include<iostream>
#include<fstream>
#include<vector>
#include<set>
#include<queue>
#include<cmath>
int main() {
std::ifstream fp;
[Code] ....
Following, there is the file "link1.dat" that I am trying to open.
10
1 1 8 2.171563e-06 1.837725e-02 3.939158e-05
2 3 17 1.067390e-05 3.612572e-02 1.047469e-04
3 2 9 1.166078e-05 3.280536e-02 3.207107e-05
4 4 26 1.236551e-05 3.143551e-02 2.054519e-04
5 7 18 3.430566e-05 2.821557e-02 1.109601e-04
6 12 18 9.582478e-06 2.847688e-02 4.161835e-04
7 12 43 5.816782e-06 4.352799e-02 4.141623e-04
8 12 16 2.036719e-05 4.194844e-02 2.629832e-04
9 12 11 1.829523e-05 3.096140e-02 4.543953e-04
10 11 47 2.563568e-05 4.001301e-02 3.140850e-04
I'm not sure why my program isn't reading data from the dat file. I'm not sure if it's because I messed up my pointers, or I'm missing something. I know we usually use Infile >> blah >> blah >> blah; to get the data from the file, but my instructor showed an example that had the struct read it for you in this format and I could just call it with pointers.
#include <iostream>
#include <iomanip>
#include <fstream>
#include <assert.h>
using namespace std;
using namespace System;
typedef int Integer;
[Code] ....
I am getting junk value in file,if i write a integers to file.can body tell me what's the prob.
int main () {
FILE* fp = NULL;
UINT32 data[4];
UINT32 i = 0;
UINT32 res[MAX_SIZE];
UZN_STATUS status = UZN_SUCCESS;
UINT32 count = 0;
/*Creating file called x*/
[Code] .....
I have a multivalued function (created in some other software Mathematica) that looks like f[8.7,5.4]=4.8+8.7*I. In other words it's a complex valued function of two variables. I store the output of this function over a range of parameters in a text file that looks like:
Code:
f[1,2]=9.8+8.7I;
f[4,5]=5.6-5.21I;
.
.
I could store it differently if that is easier, but essentially I just want some c++ code to read this in and store it, either in a vector type structure or Dictionary? (I don't think a double array will work as I don't know how long list of data is in advance).
File Data format
A,A
A,B
C,E
C,F
And so on ... it could be up to any alphabet. The number of As and Bs and Cs and Ds in first column depends on the number of unique alphabets used in the first column. For example the unique alphabets used in this case are 2 (A,C) hence each alphabet appears in the first column of consecutive 2 rows.
Which means
Code:
A:A,B,C,D
B:B,C,D,E
C:C,D,E,F
D:D, ,F,G (E is missing)
Actual Data
A,1
A,2
A,3
A,4
C,18
C,33
Final Solution: Add each integer value to its previous value and store the resulting value.
I am working on a project for school that has us read in a text file that contains 8 lines of SSN and grades. I am not sure how to go about reading in the lines and differentiate between the SSN and grades in the calculations.
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