CODEWITHSUNDEEP
c++
Lucas Menicucci
Lucas Menicucci

Reputation: 478

How do I limit the number of characters entered via cin?

I wish to limit the number of characters that the user can enter, using cin. I might wish to limit it to two characters, for instance. How might I do this?

My code looks like this:

cin >> var;

Upvotes: 9

Views: 24599

Answers (2)

stan
stan

Reputation: 4995

You can use setw()

 cin >> setw(2) >> var;

http://www.cplusplus.com/reference/iostream/manipulators/setw/

Sets the number of characters to be used as the field width for the next insertion operation.

Working example provided by @chris: http://ideone.com/R35NN

Upvotes: 16

KendalH
KendalH

Reputation: 79

hmm you could make 'var' a character array and use a while loop to read input until the array was full maybe?

char var[somenumber + 1];
int count = 0;

while(count < somenumber){
  cin >> var[count];
  count++;
}

var [somenumber] = '\0';

Upvotes: 2

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