So I have a double array, where I'm inputting float numbers to certain points in an array. Sometimes, the numbers that are printed out are completely different from what I put in.Here is the part of the code:
Code: .
while( token != NULL ) {
num = atof(token);
test[j][i] = num;
printf( "
%s, i is %d, j is %d
", token,i,j );
printf( "number is %f
value test of i,j is %f
[code]....
Why the float num prints out fine, but when put into an array becomes garbage?I'm taking string values from a csv file and turning them into floats, but no problems seem to crop up there.I reset i when appropriate and increment j when needed, so I don't think my problems are from incorrect array values (though they might be)
I was working on float and double data types and to see the results i wrote this program:
#include <iostream> #include <iomanip> #include <fstream> using namespace std; int main() { ofstream outputF("output.txt"); double a = 1; double outcome;
[Code] ....
Well I understand the part it cannot store infinite numbers. but if you take a look at the output for example (since it is too long i just added some of the outputs)
//--------------------- for the value of : 001 1 //--------------------- for the value of : 002 0.5 //--------------------- for the value of : 003 0.3333333333333333148
[Code] ....
if you look carefully at the value "5" and "10" results. it is awkwardly abnormal. which is something i couldnt understand. also it is the same with value "20", "25", "40", "50" and so on.
Can you use data type double or float for an array? ie
double n[]; or float a; float m[a];
My code wont accept me changing the data type..will on accept int data type. I get the following error when I try to change the array to double or float..
3310E:C++vector.cpp[Error] invalid types 'double [1000][double]' for array subscript
I have to complete a project that i want to read float numbers from keyboard and store them into an array of 10 elements.! Every time that a number stored into array i want to compare with previous one if they have +-10 difference .. I want to keep only 10 elements into my array so every time that i give value a[0] replace a[1], a[1] replace a[2],a[2] replace a[3]. . . .and a[10] deleted.. So when all elements of the array are similar with +-10 values print out the array.!
I want a code that can convert floating/double value into string/char array(char arr[]) and also it can be run on Boreland C++ 5.02
Here I've a code but it doesn't show all the numbers. Instead, it's showing in exponential form which I don't want!!
int main() { char* str = new char[30]; float flt = 2.4567F; sprintf(str, "%.4g", flt ); cout<<str<<endl; //Exponential form even after 6 digits without decimal return 0; }
I m working calculating stuff in files, input and output data, etc..., the question is the following: I output double numbers with:
myFIle << fixed << setprecision(10) << double;
The problem i got is that when a numer is like 193123.2 it prints like 193123.200000..., so finally, ¿how can i print it with any additional 0 that i need?.
The first line of my input file is going to contain some number "T" which will represent the "combination length" of a list of random words. (In this case, they are Taco Bell items). The first number on the second line represents the number of unique items on the menu to get, and the second number on the second line represents the number of unique items that are supposed to be bought.
Basically the input will look like this: 2 3 2 taco burrito nacho
And the output looks like this: burritos nachos nacho taco burrito taco
This is what I have so far:
Code:
#include <stdio.h> #include <stdlib.h> #include <strings.h> int main(void){ int N, T, K; char menu[N][20];
[Code] .....
What I am trying to get working right now is just to scan a file and put the strings into an array so then I can work on sorting the array. How can I add strings from a file into an array?
I am at a loss with an assignment. I am supposed to read from a text file, with an input of something like this: alphaproleone,stroke,42 1 and Store it into an array of structures and then output it with each word/number starting on a new line. My current code prints out only the first part, and the "a" in alphaproleone is the actual number "21".
#include <iostream> #include <string> #include<fstream> #include<iomanip> using namespace std; typedef struct drugtype { string name, target; int effectiveness, toxicity;
I am trying to put pieces of a csv file into an array, but i only want to put certain pieces of it. This is the information that i have
Player,Current Team, Age , Nat , Position ,From,To,Transfer fee Gareth Bale, Real Madrid,24,Wales,RW,Tottenham,Real Madrid CF,91000000 Edinson Cavani,PSG,26,Uruguay,CF,SSC Napoli,PSG,64500000 Falcao, Monaco,27,Columbia,CF,Atlético Madrid,Monaco,60000000 Neymar, FC Barcelona,21,Brasil,LW,Santos,FC Barcelona,57100000 Mesut Özil, Arsenal,24,Germany,AM,Real Madrid ,Arsenal,50000000 James Rodríguez,Monaco, 21,Columbia,RW,FC Porto,Monaco,45000000
With this i want to skip the name and team but need age.
I'm trying to pass several integers into the array idAr[10] from an input file using a for loop and then having them output on the console. The output should look like this:
#include <iostream> #include <fstream> using namespace std;
What I'm focused on is reading in the first three numbers which I already have with fscanf and then reading in BUY TICKET with the digit afterwards. My problem is that I don't know how to reach that part of the file without scanning in something I don't want to. Also, how would I scan the number after scanning BUY TICKET? Would it be something like using %s and %d right afterwards?
I have a simple input output problem using float point numbers and after the first input the program skips the other cin functions is there something that I did wrong? It compiles fine also.
Code: #include <iostream> #include <float.h> using namespace std; int main() { int x; int y; int z;
I need to write a program that reads four float numbers from the input.txt file, then it prints out the greatest of the four numbers into the output.txt file. I did everything, but the numbers don't print out.
#include <iostream> #include <fstream> using namespace std; int main() { ifstream inFile; ofstream outFile; float number1, number2, number3, number4;
I am starting to learn C++.Designing class CPolynom to work with polynomials. The polynomial coefficients are memorialized in the field of real double precision numbers. Implement the following functions:
-Constructor, which defines the order of the polynomial CPolynom(int order) -method to add the appropriate grade Coef(int exp, duble coef) -method of addition, subtraction, multiplication and division two polynomials -method to add a field coefficient -method for nala
I should sort an array of mixed float and integer numbers by merge method, and using the pointers to sort that mix array. how to use pointers to sort those different type of data.
