Menu
I'm working with strings in C++. I recently came across a problem when entering strings. I'm using cin >> string; to get my string as user input. When the user enters a space into the string, the next input is automatically filled out with the remaining letters, or sometimes left blank. As the next input string is often an integer, this will result in an unpleasant bug. What's a good fix for this?
EDIT: Here's the current code:
cout << "Please print the enemy's name: ";
getline(cin, enemyName);
653
A string in C is simply an array of characters. The following line declares an array that can hold a string of up to 99 characters. char str[100]; It holds characters as you would expect: str[0] is the first character of the string, str[1] is the second character, and so on.
In C programming, a string is a sequence of characters terminated with a null character \0 . For example: char c[] = "c string"; When the compiler encounters a sequence of characters enclosed in the double quotation marks, it appends a null character \0 at the end by default. Memory Diagram.
Declaring a string is as simple as declaring a one-dimensional array. Below is the basic syntax for declaring a string. char str_name[size]; In the above syntax str_name is any name given to the string variable and size is used to define the length of the string, i.e the number of characters strings will store.
The technical description of a String is: an array of characters. The informal view of a string is a sentence. Strings are almost always written in code as a quoted sequence of characters, i.e., "this is a string".
You probably want to get all input into the string up until the user presses enter. In that case, it can be said that what you really want is to read a "line" of text. To do that, you'd use std::getline, like so:
std::getline(cin, enemyName);
That is assuming enemyName is defined as an std::string. If enemy name is a c-style charater array, you'd want to use cin.getline, like this:
cin.getline(enemyName, sizeof(enemyName));
But, try to avoid using C-style character arrays at all in C++.
72
The behavior of >> with strings is intentional; it interprets whitespace characters as delimiters to stop at, so it's really best at chomping words. std::getline() (#include <string>) uses '\n' as the delimiter by default, but there's also a version of std::getline() that takes a custom delimiter character if you need it.
29
Use getline(cin, string); instead.
2
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
