After I cleared the first vector and copy the second in it there still some characters left behind after copying. How is that possible?
Code:
#include <string>
#include <vector>
#include <iostream>
using namespace std;
int main()
[Code]...
Using cin.sync() works great so far, but my program still breaks if you copy something with multiple lines into the console.
string test = "";
while(true) {
cin.sync();
getline(cin, test );
cout << endl << "test: " << test << endl;
}
However, if you were to copy this:
1
2
3
and paste it into the program, the output would be1
2
3
test: 1
test: 2
And if you press enter one more time:1
2
3
test: 1
test: 2
test: 3
The 3 finally pops out.
my question is located as a comment beside the last printf ! ? check the comment near the last printf the comment is ==>here i get a sequence of numbers the question is how can i copy this sequence to an array and the print the array out ?
Code:
#include <stdio.h>
#define N 30
#define n 100
[Code]....
here i get a sequence of numbers the question is how can i copy this sequence to an array and the print the array out ?
I used the Console's CursorLeft and CursorTop properties to specify the exact areas of the screen where I wanted to print information. I ended up with a 'table' full of data.
Then I used the System.Diagnostics.Trace class and added a TextWriterTraceListener and a ConsoleTraceListener object to its Listeners collection.
Then I replaced all the instances of Console.Write with Trace.Write.
The data displayed as expected on the console. But on the text file the info was printed in the same order the info was outputted to the Console. ie: all the characters used to separate rows lumped together, followed by all the characters used to separate columns lumped together, followed by the actual data that was printed between those characters, all lumped together.
I can see why I ended up with this mess. The TextWriter is oblivious of the fact that the Console's cursor position was arbitrarily modified by the application code before and after each character and piece of data was printed to the Console.
Is there a way I can just grab the text that was printed to the console, ignoring the actual order in which the individual characters were printed, and save it as a string or directly print it to a file exactly as-it-is?
I am trying to copy vector to vector as follow:
Code:
std::vector<unsigned char> vec1;
//insert some values into vec1
std::vector<unsigned char> vec2;
Now I want to to copy 2 bytes from vec1 starting at index 5., why do i need to know how many bytes from the end of vec1?? can't i just specify how many bytes i want to copy from starting index?
std::copy(vec1.begin()+5, vec1.end()-??, vec2.begin());
btw this is a part of my program
void query::load_query(const char* filename){
string lines;
int count = 0;
ifstream file (filename);
//READ OPERATION--ONE EXECUTION ONLY
if(file.is_open()) {
[Code]...
the 'flds' on the code above has vector <string> data type, i was able to output it using cout but i don't know how to copy its value to another vector <string>...whenever i tried to do that using my own way, the compiled program ended up crashing...
I have the following function:
Code:
void fillVectorWithNumbers(vector<vector<vector<double>>> &vI3) {
const long dim1 = 10;
const long dim2 = 16;
vector<vector<vector<double>>> vI3Temp(dim1, vector<vector<double>> (dim2, vector<double> (dim2, 0.0f)));
[Code] .....
So basically I need to copy vI3Temp into vI3. I assume I can't loop over each element because I haven't sized vI3. So I guess I need some push_back for this. But what code to use?
I want to have my program only clear a section of the lines displayed on screen. For example if:
Welcome. Enter : (cin)
Choose a mode: (cin)
(etc...)
Clear above lines (for example) 1 and 2?: (cin)
//now I want the program to do that. How?
Overall, I want to be able to system ("cls") only certain lines.
This code work perfectly, as follows.
Code #A:
#include <iostream>
#include <cstring>
#include <vector>
using namespace std;
typedef std::vector <void *> gr_vector_void_star;
gr_vector_void_star output_items;
[Code] .....
Output of above code #A:
char * sentence = "Angel";
for (int i=0; i < 5; i++)
{ out[i] = sentence[i]; } // error: invalid conversion from 'char' to 'char*' [-fpermissive]
It fails to compile with error message "invalid conversion from 'char' to 'char*'".
I am having some issue with clearing cin buffer. The following code does not wait for me to see the output window and till I hit return character.
#include "iostream"
#include "stdio.h"
#include "math.h"
#include "string"
#include "sstream"
using namespace std;
[Code] ....
I tried
cin.flush, cin.ignore(numeric_limits<streamsize>::max(), '
'); cin.clear(); fflush(stdin);.
None of them worked
I am working on Microsoft visual studio express 2013 for windows desktop.
I am having a problem with my c++ code. I am attempting to clear the text off of the command prompt screen in a text based game program. I put a restart option using a goto in my program. How would I be able to clear all previously displayed text.
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avl.c
Code:
#include<stdio.h>#include<stdlib.h>
#include<time.h>
#include "avl.h"
#define N 10
void swap(int *a, int *b){
[Code] ....
so my question is i want to print characters,no string just an array of characters,i do this but it s not working,maybe i have to put the '' at the end?
Code:
int main() {
int i;
char ch[5];
for(i = 0; i < 5; i++) {
scanf("%c",&ch[i]);
[Code]...
Im supposed to find the common characters between two string characters, assuming that the user wont input duplicate letters like ddog. When I run my code I get an output of a question mark upside down. Here is my code with comments on what each part is supposed to do
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(){
char str1[20], str2[20],remp = ' ';
int size1,i,j,temp;
printf ("Input the first string");
[Code]...
I have a board where a character is. I need to ask the user whether they want to move it up, down, left right. They are allowed to enter 3 move per turn. like up, up, left. How do I do this?
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
const int COL = 17;
const int ROW = 17;
[Code] .....
Having trouble getting my square to move to the left my code and instructions of what i am suppose to do is below. No sure how to move my square or if I am even going in the right direction as to writing code to do so. Note that it is only part of my code ( part 2 of project)
Part 2:
Write a graphical application that draws a square and then moves it.
Get the x and y coordinates for the top left corner of the square from the user using the get_int() member function of cwin. Get the length of a side of the square from the user using get_int() as well. Now draw the square to cwin according to the user input.Ask the user how many units to the left they want to move it using get_int() again. Then move the square, clear the screen, and draw it again.
// Part 2 //
/* command output to declare the x,y value and 1 side length of a square through user interaction( Has user input intergers) */
int x_value = cwin.get_int("What is the x_value of the top left of the square?");
int y_value = cwin.get_int("What is the y_value of the top left of the square?");
int side_length = cwin.get_int("Input the length for one side of the square:");
/* Data type for the 4 corners of the square */
Point e;
Point f;
[Code]...
This works, if just loops through till it doesn't find a space or tab than counts the index at that point then uses substr to get rid of any spaces/tabs, it's a small function and uses a goto. how to do it?
Code:
string trimLeft(string lineOfCodeToTrim){
string l = lineOfCodeToTrim;
int k =0;
for(UINT i = 0;i<l.length();i++){
[Code] ....
I am having problems compiling this program. line 29 causes the error "left operand must be l-value".
// chap5proj.cpp : Defines the entry point for the console application.
//
# include <stdafx.h>
# include <iostream>
using namespace std;
int main() {
double mph, time, disPerHour, milesTrav;
[code]....
i want to write a program that input a text from user and align it to the left. Is there any command that i can use? How should i think?
View 12 Replies View RelatedI have the following code for a treap but I don't know how to make roate_left and rotate_right functions to balance it.
Code:
#include<iostream>
#include<utility>
#include<stdlib.h>
#include<time.h>
#include<stdio.h>
using namespace std;
template<typename T> class Treap{
[Code] ....
I have code that prints.
PrintDlg.
StartDoc
StartPage
TextOut
EndPage
EndDoc
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The program is meant to calculate how much parking costs based on the amount of hours in a park and what type of vehicle it is. the error is coming from my function definitions which i have just started to add in.
Code:
float calcCarCost (char vehicletype, int time, float car)
{
if ((time > MINTIME) && (time <= 3))
calcCarCost =( CAR * time );
}
The error is on line 72 which is:
calcCarCost =( Car * time);
I should probably point out CAR is already defined as a constant with a numerical value given and time is previously asked to be input in when the program runs.
I'm using Visual C++ 2010 and SFML game library. I want to know how to move an object from right to left automatically and back left to right??
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void ( *pressFunc ) ( void*, void* );
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And i did this
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How do you add a value to the beginning of a string instead of the end?
This is for an assignment and I have to convert the user input (always assuming its a valid decimal number) to binary and store it in a string. I've got up to dividing by two to get the remainder ...
