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Writing a file by taking input from user only saves value for "x" only


Writing a file by taking input from user only saves value for "x" only

By : Prince Ankit
Date : October 24 2020, 06:10 PM
will help you Where are you writing the value of y? I can see that you write the value of x to the file
code :
 fwrite((char *)x, sizeof(double), 1, fp);


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How can I create a "Revise" button that saves user input?

How can I create a "Revise" button that saves user input?


By : Mohamed Saleh
Date : March 29 2020, 07:55 AM
Hope this helps I'm working on a JSF2/Java web application with select items like this checkbox below, that gets submitted when the form is submitted. ,
how would I go about rendering a form that is pre-populated?
code :
@PostConstruct
public void init() {
    byNewStates = true;
    states = Arrays.asList("NY", "CA", "FL");
}
Taking "exit" as user input in C++

Taking "exit" as user input in C++


By : user3599498
Date : March 29 2020, 07:55 AM
Hope that helps I think this changes in your code will solve the problem. Please, try with this code:
code :
void printArray(string string_array[], int size){
    for (int i = 0; i < size; i++){
        cout << string_array[i];
    }

}
void a_func(){
    string string_array[10];
    string user_input;

    while (user_input != "exit"){
        cout << "Please enter a number between 0 - 100: ";
        cin >> user_input;
        if (user_input == "exit"){
            printArray(string_array, 10);
        }
        else if (stoi(user_input) < 0 || stoi(user_input) > 100){
            cout << "Error, please re-enter the number between 0 - 100: ";
            cin >> user_input;

            int array_index = stoi(user_input) / 10;
            string_array[array_index] = "*";
        }
    }
}
Why my "gets" is not taking user input but rather printing the first line in the comment?

Why my "gets" is not taking user input but rather printing the first line in the comment?


By : chandni
Date : March 29 2020, 07:55 AM
this one helps. When your script is invoked with command line arguments, gets will interpret them as a list of file and read from those files rather than from stdin. This is meant as a shortcut to create scripts acting like grep and similar command line tools, which will process the given files or stdin if no files were given (making it easy to pipe input to them in shell scripts). If you always want to read from stdin, you should use STDIN.gets.
In your case you don't seem to be invoking your script with any command line arguments, but you actually are: due to the way Windows handles file extensions in the command line, you can just type in foo to start a ruby script named foo.rb. Your script is named ruby.rb and when you type in ruby, Windows actually executes your script ruby.rb rather than ruby.exe, the Ruby interpreter. So ruby ruby.rb actually invokes your script ruby.rb with the argument ruby.rb. To invoke your script without arguments, just type ruby, ruby.rb or, if you want to invoke the interpreter explicitly ruby.exe ruby.rb. You can also rename your script to something other than ruby to avoid this problem.
Writing "\r" with std::cout to file saves previously overwritten lines

Writing "\r" with std::cout to file saves previously overwritten lines


By : Jessie Ho
Date : March 29 2020, 07:55 AM
Any of those help There is none. Terminals are not standardized in any way. Just as a file they take a stream of bytes, but they can react differently to the input you give them.
I.e. some are able to color using escape syntax. It just happens, that a terminal you are using treats \r to go back to beginning of the line and start over writing. For the file output it's just a byte to write with out any special meaning. You are not even guaranteed that \r will reset line on every terminal you run it. It is system depended.
Reading from an "in" file and writing to an "out" file in C++ using the input output stream

Reading from an "in" file and writing to an "out" file in C++ using the input output stream


By : user3653818
Date : March 29 2020, 07:55 AM
will help you I will be using Windows for this. The ".in" file (let's say input_file.in) can be opened and viewed using the notepad.
Using a C/C++ program, follow the following steps:
code :
code <input_file.in
code <input_file.in >output_file.out
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