C++ :: How To Make Random Letters With A Vector

Mar 9, 2014

I am supposed to make a scrabble game and randomize 10 of the letters.

Here's my code:
class Spinner
Spinner::Spinner(string things[], int numThings[], int n)
{
currentPosition = 0;

[Code].....

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C++ :: Make 10 Random Numbers Thus Making 10 Random Flips Of Coin?

Aug 31, 2013

I want to make 10 random numbers thus making 10 random flips of a coin. I am getting 10 tails or 10 heads!

Code: #include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;
int main(int argc, const char * argv[])
{

[Code].....

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C++ :: How To Put 2 Letters Together And Make Them To Count As 1

Mar 11, 2013

how to put 2 letters together and make them to count as 1?

provided that they must consecutive

for example:

p : count as 0
pxp : count as 0
pp : count as 1
xpxp: count as 0
ppxpp : count as 2

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C++ :: Generating String Of Random Letters

May 1, 2014

My problem says: Have the user enter a number from 1-80 then print out a string of random letters(a to z lowercase) of that length.

I have been able to enter the number and output the correct amount of letters but i can't figure out how to get them to be in a random order and not in alphabetical. Here is what I have so far.

#include <iostream>
using namespace std;
int main() {
int i=0;
int num;
cout<<"How many letters do yu want in your random string?";

[Code]....

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C# :: Random Generated Numbers And Letters

Feb 13, 2015

I am Currently working on a project and i wish to generate a ID that Contains Numbers letters and a dash for example

000000-A00 The First 0's can be any number but the last 2 needs to between 01 and 12 the letter needs be A B or C

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C/C++ :: Function That Generates A Random String Of Uppercase Letters

Apr 19, 2014

I need to write a C function that generates a random character array (i.e. string) of uppercase letters - getchar and putchar are the only IO functions that I can use. Below is what I have already - I am iterating for as many times as I am required to, and am modulating rand() by 25, (total letters in the alphabet). I'm trying to see how to get the random letter from the % 25, and also how to do this without toupper() [not sure if I can use that function].

void getRandomStr()){
char str[40];
for (int i = 0; i < 40; i++){
char c = rand() % 25);
str[i] = toupper(c);
}}

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C/C++ :: Shifting Characters - How To Make Letters Loop Back To The Start

Feb 9, 2015

I have to make a function that i'll later be able to use for a ceasar cypher. The letters should shift a user inputted number. This is what I have so far:

char shiftChar(char c, int s) {
char ch = c;
int shift = s;
int newC;
newC = int(ch) + shift;
return newC;
}

The problem with this, is that it doesn't loop back to the start of the alphabet once i get past z.

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C++ :: How To Make Random Number To Be Different For X And Y

Sep 6, 2014

I got problem with the loop and Q(remains same = Q1 in output). How to make the random number to be different for x and y???

#include<stdio.h>
#include<time.h>
#include<math.h>
#include<stdlib.h>
int Random();
void Position(int z,int y);

[Code] ....

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C++ :: How Many Random Numbers Make Up A 100

Jun 21, 2013

Assuming you have an array of these values x=[16,18,23,24,39,40] how would you write a function to generate random numbers that can add up to a 100? I need to know how many random numbers can add up to a 100.

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Visual C++ :: How To Make Random Array To Not Repeat

Feb 17, 2013

Here is my code for a simple game. paste it and try it.

#include <iostream>
#include <string>
#include <ctime>
#include <cstdlib>
using namespace std;
int main (void) {
stringg[4],

[code]...

What they do (enter 4 actions)?

";
for (int ai = 0; ai < 4; ai++)
getline(cin, a[ai]);
cout << "

Where is happening (enter 4 locations)?

";
for (int li = 0; li < 4; li++)
getline(cin, l[li]);
for (int c = 0; c < 4; c++)
cout << g[rand() % 4] << " and " << b[rand() % 4] << " are " << a[rand() % 4] << " from a " << l[rand() % 4] << endl;
return (0);
}

At the end in the 4 lines some of the names, actions and locations repeat. How do I make them to not repeat and use every name that you will enter? do I need random_shuffle? How can I integrate it in my code?

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C++ :: How To Make 5x3 2D Vector Of Integers

Feb 8, 2014

I am trying to make a 5x3 2D-vector of integers, then set its i-capacity to be 5 and j-capacity to be 3, i.e:

vec2D[i][j] i = 1,2,3,4,5 j = 1,2,3

and then assign integer values to it.

#include <vector>
#include <iostream>
using namespace std;
int main () {
vector<vector<int> > vec2D;

[Code] ....

It compiles, but does not work properly:

Test.exe exited with code -1073741819

i-capacity before reserve: 0
i-capacity after reserve: 5

i = 0
j-capacity before reserve: 336043326
j-capacity after reserve: 336043326
i = 1
j-capacity before reserve: 4282929217
j-capacity after reserve: 4282929217
Press <RETURN> to close this window...

I am trying to convert a C code with dynamic 2D arrays, to a C++ code. I prefer to keep the vec2D[i][j] = ... way of assignment instead of using vec2D.push_back(...).

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C++ :: How To Make Vector Of Char

Jun 8, 2013

let say

char temp[8][8];

and you want to make vector of this char

vector<????> boardVec;

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C++ :: Random Numbers - Declare Two Objects And Get Different Vector

Oct 13, 2013

I just created an object who store a vector of size 7 with random numbers between 1 and 36. If i declare two objects i get different vector, but running many times the program i always get the same vectors . For example, if i declare one object, even if i run any time the program, i always get the same numbers.

I am using the function

num= rand()%36+1,

wasn't it supposed to generate randoms numbers?

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C++ :: How To Make Cin Accept Different Punctuation From Vector

Mar 7, 2013

My program is a dictionary vector with a cin at the end that will read your input and check if it's in the dictionary.

#include "std_lib_facilities_3.h"
#include <algorithm>
#include <string>
#include <iostream>

string translate_to_lower(string s){
transform(s.begi[/code]n(), s[/code].end(), s.begin(), (int (*)(int)) tolower);

[Code] ...

How do I make the program accept inputs such as "hello?", "hello!", and "hello,"?

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C++ :: How To Make Sure Dereference To Vector Is Valid

Oct 6, 2014

I have this piece of code in parts of my path finding algorithm

for( int head; head < q.size(); ++ head ){
walk& w = q[head];

// do manything with w
if( some_condition ) q.push_back( walk( w.x + 1, w.y, head ) );
}

However I notice that sometimes w is cannot be dereferenced. It can but it throws junk number at me. Perhaps the vector is changing it size and move the whole array to a different location. Is there anyway to make sure that w is always valid ?

I just want to use w because of shorter typing and cleaner look not because of performance. I also refrain from using macro.

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C++ :: Finding Location Of A Vector - How To Retrieve Random Card (1 - 52)

Aug 7, 2014

I'm doing a card game and i'm unclear on how to retrieve the card by doing vectors. after i use use srand() in main and create a rand() in a function, how can i retrieve that random card 1-52?

so far i know that i have to find the length of the card. but i don't know why i have to save the location onto another variable and erase the card of the specified index before returning the card out the function.

int location = rand() % cards.size();

I don't know why i need to do this and how do i reinitialize the variable cards into another variable?

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C++ :: Generate Random Integers In The Range And Store Them In A Vector

Sep 3, 2014

You are to write a C++ program to generate random integers in the range [ LOW = 1, HIGH = 10000 ] and to store them in a vector < int > of size VEC_SIZE = 250. Then, sort the contents of the vector (in ascending order) and display it on stdout.

To sort the contents of a vector, use the sort ( ) function from the STL. In addition to the main ( ) routine, implement the following subroutines in your program:

• void genRndNums ( vector < int >& v ) : This routine generates VEC_SIZE integers and puts them in vector v. Initializes the random number generator (RNG) by calling the function srand ( ) with the seed value SEED = 1, and generates random integers by calling the function rand ( ).

• void printVec ( const vector < int >& v ) : This routine displays the contents of vector v on stdout, printing exactly NO_ITEMS = 12 numbers on a single line, except perhaps the last line. The sorted numbers need to be properly aligned on the output. For each printed number, allocate ITEM_W = 5 spaces on stdout.

Programming Notes:

• You are not allowed to use any I/O functions from the C library, such as scanf or printf. Instead, use the I/O functions from the C++ library, such as cin or cout.
• Let v be a vector of integers, then the call: sort ( v.begin ( ), v.end ( ) ) sorts the elements of v in ascending order. The detailed description of the sort ( ) routine can be found on the course web site and in the course textbook.
• Execute the srand ( ) function only once before generating the first random integer with the given seed value SEED. The rand ( ) function generates a random integer in the range [ 0, RAND_MAX ], where the constant value RAND_MAX is the largest random integer returned by the rand ( ) function and its value is system dependent. To normalize the return value to a value in the range [ LOW, HIGH ], execute: rand ( ) % ( HIGH – LOW + 1 ) + LOW.

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C++ :: Sorting Large Numbers Of Vector Of Random Integers Returns All Zero

Jul 31, 2014

I tried to sort a large numbers of vector of random integers with std::sort(), but when the number increases over 10M, std::sort returns all zero in values. Does std::sort have a limitation of input numbers?

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C/C++ :: Error In Vector Pushback - Creating Random Unwanted Numbers

Apr 12, 2014

I'm currently writing a chunk of code that will take inputs from the user and push them into a vector until 0 is entered, at which point it will break the loop and continue on with the rest of the program. This is nothing I haven't done before, but I have never encountered this error.

The code chunk looks like this:

typedef vector <int> ivec;
int main() {
ivec nums;
int input;
while (true) {
cout << "Enter a positive integer, or 0 to quit" << endl;

[Code] ....

My standard testing input has been 3 5 6 3 8 (then 0 to quit), so one would expect my sequence to be 3 5 6 3 8...but instead after the 8 I get a random number value that is usually quite large and I cannot figure out where it comes from (ex. 3 5 6 3 8 201338847).

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C++ :: Make Program That Prints Out 10 Random Questions From 15 Questions?

Oct 29, 2013

I need to make a program that prints out 10 random questions from the 15 questions in a .txt file, and then print out the choice IN RANDOM.

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C++ :: How To Count Letters

Mar 16, 2013

I'm just trying to find out if the way I've setup my code currently allows me to count the letters as they occur? I don't yet see how to do it but I need clarification. Ideally the function letterCounter would do the counting but atm I'm just trying to figuring it out in the display function.

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C :: Writing Numbers In Letters?

Jan 26, 2013

Code:
#include<stdio.h>
#include<string.h>
#define a 9
#define b 9
#define c 3
int main() {

[Code] .....

In practice section there was a challenge to print up numbers in letters up to billion including negatives I didn't look at the solution and came up with this but it is getting difficult after this point....

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C :: Printing A Parallelogram From Letters

Nov 14, 2013

These are the instructions: read a number between 1-26 and build a parallelogram in the size (height&width) of the number entered.

Each row of the parallelogram will be built from each capital letter from 1 to the number read (max 26).for example: by entering the number 3, will be printed:

AAA
_BBB
__CCC

for the number 4:
AAAA
_BBBB
__CCCC
___DDDD

I am struggling with how to change each char in every different row, how do I print this parallelogram ?

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C :: Converting Letters To Hexadecimal

Jun 3, 2014

i m trying to write a code that would convert a each letter from a text to their decimal images . while i was able to write the part of entering the text , i cant do the converting part , i searched all day on the internet and found nothing.

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C++ :: How To Read Selected Letters

Jun 1, 2013

I have a text file in which i need to read only selected letters and substitute them with integers to calculate.

Eg:-
In the text file
f2,h1

Here i need to read only the the letters f & h and substitute them with some integer and add them up.

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C++ :: A Program To Print Big Letters?

Nov 28, 2013

I need help writing a program where I use small letter to write names in Big letters. (I dont know if you understand what i mean). Follow link to description.

[URL]

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