This is about reading a "txt file" and storing the contents in a variable. But i've got problems with it because normally, it is space delimited, that is, values separated by spaces are considered different values. How am I going to make C++ read the whole line including spaces?
I have attached the file that I need to read into a data structure. In the example I am just printing it to the screen. This following code has worked for me before, but now isn't. I have tried in visual studios, and on unix, and neither are running it. I ultimately need it to run on unix.
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.
I want to store the address of a customer (with spaces) in a char variable (say cadd). First I tried to use "cin", as we know it reads until it sees any whitespace. So it reads only first word before a white space. So, I used "getline()" function. But when I used it, It didn't wait for the I/P (it skipped it).
I stumbled into this forum in frustration as I tried to pass a string with both quotes and spaces into a single variable. I have looked up a couple places online, and even saw an old post here (Handling spaces in command line arguments) However, I still cannot seem to get the following string (in between the ---'s) to stay in one command line argument.
I must create a program (a simple main.cpp in console interface) which deletes two spaces for every newline in a file. If a line has no space, it goes straight to the next line to the end of the file. After the program is to resave the file contents into a new file that has the same name as the old, but change the extension to. Modif
The problem is I can not do that ... Do you have a sample code that does this?
The actual code is a bit longer since it offers you to input the size and then it draws the pic. Now that wasn't so hard and I've done that but now I wanted to implement the "MessageBox" func for output.
I managed to write the cube in file cube.txt but when I'm reading from it 1 char at a time since I need to output as char array it avoids all spaces and new lines and just puts all symbols in the same row.
I didn't have that issue with C and I've found on stackoverlow a solution using strings & getline but I need it to be in "char" form.
How to actually read spaces and newlines? This is my current code for reading from file:
Code: ifstream di("kocka.txt", ios_base::in); char c[5000]; int br=0; while( di >> c[br]) { br++; } MessageBox(NULL, c, "Kocka", MB_ICONHAND); di.close(); P.S kocka = cube (in croatian )
All I have so far is a rectangle that prints 5 stars in length and 20 lines in length. What I want to do now is have each new line print an extra space more than the line before it and then print 5 stars.. This is what I have so far:
Code:
#include <stdio.h> int main (void){ int i; for(i=1; i<=20; i++){ printf("***** ");
I want to store the address of a customer (with spaces) in a char variable (say cadd). First I tried to use "cin", as we know it reads until it sees any whitespace. So it reads only first word before a white space. So, I used "getline()" function, it will work. But when I used it, It did'nt wait for the I/P (it skipped it).
I am trying to read a file line by line and then do something with the informations, so my method looks like this:
Code: void open_file(char *link) { FILE *file = fopen(link, "r"); if (file == NULL) { fprintf(stderr, "Could not open file. "); exit(EXIT_FAILURE);
[Code] ....
1) The first complain of valgrind is at the line where I use fgets and its telling me (invalid write of size x), but I have allocated my line to 56000 and the read line is shorter, why is there a write size error then :S?
2) at the line where I realloc where I try to shrink the space he's telling me: Address .... is 0 bytes inside a block of size 56000, But I know i need only this space so why is there a write over space error :S??
As, it can be seen from the above structure that whitespaces are not same everytime. So, to deal with this situation, i am using boost library to remove all whitespaces from the line which is being read and then try to find the name of gate and its input. My code is given below which is able to correctly find the gate names and its first input...but my code is not able to find the second, third and so on input names.
How to read a file line by line and then later access them by doing something like
Code: lines[0] //Line number one ... lines[100] //Line number one hundred and one lines[100][0] //L lines[100][1] //i lines[100][2] //n lines[100][3] //e lines[100][4] // lines[100][5] //n ...
General Purpose: Delete all "white spaces" in text file, until the read-in char is _not_ a whitespace (mark as start of text file).
Problem: Cannot seem to shift char's over properly. (I think my problem is the inner loop - however other code may lead to this problem - I do not know)
Code:
#include <fstream> #include <iostream> using namespace std;
bool trimWhiteSpace(fstream &file, char * charMemoryBlock) { if (!file.is_open()) {
void login() { //username, password, option to register, option to exit, link to website cout << "Would you like to login(1), or press anything else to register.?" << endl; cin >> loginYorN; if (loginYorN == 1) { cout << "Please enter your username: "; cin >> accountInfo[1];
[code]...
So as above, I ask them to input 1 for login, anything else for register. Whatever they input, it get's stored into loginYorN, then I check to see what they input. If they put '1' for input, then I ask them for their username, store that into accountInfo[1], and then asking for the password, storing that into accountInfo[2].
Now here is where I need to input line 1(username) from login.csv or login.txt and line2(password) and storage these into accountID and accountPW.
I had a problem which i fixed it but couldn't fix it in a nice way. Lets understand my problem first, i have a file and has data in the following format
Id(int) and Description(string)
Code: 1 this is first line 1 continuity of first line 1 again first line 2 this is second line 3 this is 3rd line 3 continuity of 3rd line 3 again 3rd line 3 and again 4 fourth line
I was only interested in the integer part and ignore the description at first, it was easy because they are separated by a tab.
Here is my code for that problem
Code: #include<iostream> #include<fstream> #include<string> #include<cstdlib> #include<limits> using namespace std; int main(){ string str;
[Code] .....
But now i need that description again which i ignored at first means the rest of the line, so how to get it? so is there any way of solving it? Here is my approach but i can't find any method to access to the rest of line
Code: value = atoi(str.c_str()); (if value==1){ cout <<restOfTheLine<<endl; }