Since you have not posted any code. I am going to take a guess. A common problem while using getline with cin is getline does not ignore leading whitespace characters. If getline is used after cin >>, the getline() sees this newline character as leading whitespace, and it just stops reading any further. How to … Read more
You can follow this answer to see many different ways to process CSV in C++. In your case, the last call to getline is actually putting the last field of the first line and then all of the remaining lines into the variable genero. This is because there is no space delimiter found up until … Read more
So many problems in so few lines. I probably forget some: argv[0] is the program name, not the first argument; if you want to read in a variable, you have to allocate its memory one never loops on feof, one loops on an IO function until it fails, feof then serves to determinate the reason … Read more
If you’re using getline() after cin >> something, you need to flush the newline character out of the buffer in between. You can do it by using cin.ignore(). It would be something like this: string messageVar; cout << “Type your message: “; cin.ignore(); getline(cin, messageVar); This happens because the >> operator leaves a newline \n … Read more
The problem is you are mixing calls to getline() with the use of the operator >>. Remember that operator >> ignored leading white space so will correctly continue across lines boundaries. But stops reading after the input has successfully been retrieved and thus will not swallow trailing ‘\n’ characters. Thus if you use a getline() … Read more
You have to be careful when mixing operator>> with getline. The problem is, when you use operator>>, the user enters their data, then presses the enter key, which puts a newline character into the input buffer. Since operator>> is whitespace delimited, the newline character is not put into the variable, and it stays in the … Read more
Let’s take std::cin.getline() apart. First, there’s std::. This is the namespace in which the standard library lives. It has hundreds of types, functions and objects. std::cin is such an object. It’s the standard character input object, defined in <iostream>. It has some methods of its own, but you can also use it with many free … Read more
Ignore is exactly what the name implies. It doesn’t “throw away” something you don’t need instead, it ignores the amount of characters you specify when you call it, up to the char you specify as a breakpoint. It works with both input and output buffers. Essentially, for std::cin statements you use ignore before you do … Read more
The getline(cin, str); reads the newline that comes after the number read previously, and immediately returns with this “line”. To avoid this you can skip whitespace with std::ws before reading the name: cout << “Enter number:”; cin >> number; cout << “Enter name:”; ws(cin); getline(cin, str); … Note that this also skips leading whitespace after … Read more
If you’re using getline after cin >> something, you need to flush the newline out of the buffer in between. My personal favourite for this if no characters past the newline are needed is cin.sync(). However, it is implementation defined, so it might not work the same way as it does for me. For something … Read more