1. C++ User Input Map

The way you have it written the user needs to enter 20 values, and an empty line. Charles' change says to break when either condition is met (not both). For the sake of. Forcing user to enter an integer. Ask Question Asked 6 years, 3 months ago. Active 6 years, 2 months ago. Viewed 22k times 4. 1 $begingroup$ I am new to C and would like to know the most efficient way of forcing a user to enter an integer. Here is my function that I have created. User input is line based so always read a line of input.

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• I've tried reading back threads and the various posted tutorials, etc that here and I've not stumbled upon the answer I'm looking for. I am attempting to write a hangman game as a school project, and I am having trouble getting just one character from the input stream. This is the code I have so far.
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• C User Input. You have already learned that cout is used to output (print) values. Now we will use cin to get user input. Cin is a predefined variable that reads data from the keyboard with the extraction operator. In the following example, the user can input a number, which is stored in the variable x.
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The cin.ignore() function is used which is used to ignore or clear one or more characters from the input buffer.

To get the idea about ignore() is working, we have to see one problem, and its solution is found using the ignore() function. The problem is like below.

Sometimes we need to clear the unwanted buffer, so when next input is taken, it stores into the desired container, but not in the buffer of previous variable. For example, after entering into the cin statement, we need to input a character array or string. So we need to clear the input buffer, otherwise it will occupy the buffer of previous variable. By pressing the “Enter” key after the first input, as the buffer of previous variable has space to hold new data, the program skips the following input of container.

Example

Output

There are two cin statements for integer and string, but only number is taken. When we press enter key, it skips the getLine() function without taking any input. Sometimes it can take input but inside the buffer of integer variable, so we cannot see the string as output.

Now to resolve this issue, we will use the cin.ignore() function. This function is used to ignore inputs upto given range. If we write the statement like this −

Then it ignores input including the new line character also.

Example

Output

Hello all,

I've tried reading back threads and the various posted tutorials, etc that here and I've not stumbled upon the answer I'm looking for.

I am attempting to write a hangman game as a school project, and I am having trouble getting just one character from the input stream. Free dish auto tunes. This is the code I have so far:

Its pretty ugly, but it works ok. I don't yet know how to code something better (which is what I'm trying to find out). The original idea that I had was to read the text stream from the user into an array declared to size of 1, ignoring all other characters after the first character so as not crash the program.

There HAS to be a better way of doing this. I've read about the get function at cplusplus.com. cplusreference.com, and I've googled the net but I've come up with nada. If someone would be so kind as to help me with this, I (and my teammates for this program) would appreciate it.

Thanks

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darkagn315

I'm pretty sure this should work:

C++ User Input Map

I haven't tried it, but it only allows for a one character input I think..