C :: Make Fgets Stop Reading When It Reaches A New Line?
Apr 13, 2014
How can I make fgets stop reading when it reaches a new line? Right now it will read the new line and continue until the buffer is full. I was thinking something like this.
I want the numbers to be put into the array until it hits a new line. Maximum number of numbers is 1000. What can I replace that while loop with to stop it from reading further into the input file?
i am trying to read a string using fgets and storing in an array i want to prevent fgets from storing the new line character on the array using the shortest means possible..
I'm using fgets which will read a single line at a time, but unlike fgets I don't want it to return the new line char ( ) ?I want to be able to use printf to display the lines next to each other.
With my input.txt file being Code: abcd efgh And in particular, there is no new line after the letter h, but when I print out the text string, I get a new line after h. Why is this?
I'm new to C/C++. I am attemping to use fgets and sscanf to read a line of input, and confirm it is a positive number.My code works great, except for the case of a negative number. When I enter a negative number, my while loop seems to run infinitely, with stdin providng the same input over and over again.
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 ...
I am using visual studio 2012.....in below code i m writing data in to a test.txt file but i dont know with which key file stop accepting char...i tried ctrl+z and ctrl+d but not working ....
I tried to make the output look like this --> ENTER YOUR NAME:Victor Collin ENTER YOUR COURSE:BSComSci but everytime I entered my name the course went to the next line.How to make the output in the same?
OK I'm making a simple program to make a shopping list. I would like the program at start up to load the previous shopping list that was saved as a text file. The format is one line per entry which consists of the category or Isle, and the item description. Here's an example:
3 Dog Food Produce Sweet Onions
I reading the first word, and then I want to read the rest of the line which may have more than one word... the problem is my code hangs... or goes into the old infinite loop. It doesn't see the end of file.
Here is my code:
void addItemsFromFile(vector<item> &shoppingListVector) { string word; char buf[30]; if (fileExists("shoppinglist.txt"))
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; }