C++ :: Read Float Numbers From Keyboard And Store Them Into Array Of 10 Elements
Jan 10, 2013
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.!
1) declare a variable ptr as a pointer to int and initialize it to NULL 2) dynamically allocate memory for an array of 100 elements 3) read 100 elements from the standard input device and store them in the array.
This is what I have so far, I'd like to know if its ok or if something is wrong.
int *ptr = NULL; ptr = new int[100]; cin >> dataPtr [arr];
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.
Find all the prime numbers between a given pair of numbers. Numbers should be read in from an input file called "numbers.txt" and find all the prime numbers between them. Store the prime numbers in an array, then sort the array from greatest to least. Display the array before and after the sort.
I'm stuck on how to put the prime numbers into an array.
The input file has the numbers 1 & 100.
Here's what I have so far.
#include <iostream> #include <fstream> using namespace std; int main() { ifstream fin; fin.open("numbers.txt");
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)
Is possible read text form keyboard using read() function? or which is best way in ansi creplace input command form basic language. for numbers and text...
This is in c. Write a program which asks for X numbers, and stores them in an array.
The program then asks the user to enter a number to look for, and tells the user how many times that number appears in the array of numbers (if any), and the array index which contain the number
Make an array of the indexes where the number was found, and then format your output to match my output.
Sample Run:
How many numbers would you like to enter: 5
Please enter a number:1 Please enter a number:2 Please enter a number:3 Please enter a number:4 Please enter a number:2
The numbers you enter were: 1, 2, 3, 4, 2 Please enter a number to find: 2 The number appears 2 times, at array ellements with indexes 1, 4
So we're having an assignment for school where you code a Roulette game which simulates you playing and you can choose how many times you "play" to check how many times you'd win (if that makes any sense, im german :P)
Anyways, the problem is how do i store all the random generated numbers in an array while NOT doing this (it's just a snip):
Code:
void randomzahl(void){ int i; int zahl5[5]; int zahl10[10]; int zahl100[100]; int zahl1000[1000]; int zahl10000[10000]; if(runden == 5)
Write a program which stores 10 decimal numbers in an array. For these numbers accept input from the users. Once the array is populated do the following:
Display each elements of the array Display the sum of all the elements of array
Basically this is what i need to do. Write a program that reads a number from the keyboard, separates it into its individual digits and prints the digits to screen, each on its own line followed by the same number of stars as itself.
For example, if the number is 2339 the program should print
9 ********* 3 *** 3 *** 2 **
So far i have managed to separate the number and have them on different lines, but how to implement the stars onto each line with the number!
My code so far:
int main() { int n; printf("number? "); scanf("%d", &n); while (n > 0) { printf(" %d
I am currently trying to implement a 2d vector to store x and y of type int.
I have successfully passed it to the function, however i am unable to store the values in it. It always returns with a segmentation fault and my program terminates from there. May i know how do i store them properly and call them out?
Below is my code snippet
int reconstructSecret(int x, int y, vector< vector<int> > &inVec ,int constructSecret) { int getX,getY,formula,accum,count,getSecret,startPosition,nextPosition,numerator,denominator; getX=x; getY=y; int result;
[Code] .....
The main method
vector< vector<int> > inVec; for(int i=0;i<constructSecret;i++) { cout<<"please key in the "<<i<< "share of x value:"; cin>>x;
I have an algorithm which uses nested for loops, which looks for duplicate elements in an array. However, as soon as one duplicate element is found... the program will stop looking for more duplicates? My program continues to look for more even though one is found? I know there is a break command but I can't get it to work. Code is below:
output of program: Repeating element found first was: 2, 1
Although I want the outcome to be; Repeating element found first was: 2
#include<stdio.h> #include<stdlib.h> #include <iostream> using namespace std; void printRepeating(int arr[], int size) { int i, j;
am trying to create a program that asks the user personal questions.
std::vector<std::string> name, age, favsinger; std::cout << "Hello, what is your Name Age Favorite_Singer? "; std::cin << name; //i want to store the user's info along with the sibling's
I am trying to Write a program that inputs three integers from the keyboard and prints the sum, average, product, smallest and largest of these numbers. How do i go about it. What i dont know is how to come up with smallest and largest number .
Say I have a class with a few member functions, and only two data members: an int* Table; and an int Size;, to store the number of elements in Table.
I'm using a copy constructor that takes in two parameters: int* table, int size. In this case, is the address that table points to the same address as the object that table is part of? And furthermore, is it possible to say table.Size? I want to compare the passed array's size to the passed size.
My C programming class wants us to write a program to read integers into an array, sort the numbers and print out the occurrence of each number. I've tried everything that I can think of but the core dump is still occurring.
void countValues ( FILE *inf, int list[], int size ); /* Function prototypes. */ void printFrequencies( const int list[], int size ); int main (void) { int status = EXIT_SUCCESS; /* defaulting status to success. */ FILE *inf = fopen( "numbers.txt", "r" ); /* input data file */
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;
