Repeating a string

Question

How can I repeat a string n times in c++?

Answer 1

you can define a repeat function, or use a more complicated set of operator overloads (that I found on StackOverflow).

https://stackoverflow.com/questions/33572768/possible-to-overload-operator-to-multiple-an-int-and-a-char

https://sololearn.com/compiler-playground/cewC3toWF9N8/?ref=app

Answer 2

If you mean printing it several times, then put the cout inside a for loop.

Answer 3

Hossam Eldeen another option is using auto
for (auto _(2); _--;) {}

https://sololearn.com/compiler-playground/cWFv8b4lIk0P/?ref=app

Answer 4

In C++, you can repeat a string `n` times using various methods. One simple way is to use a loop to concatenate the string `n` times. Here's an example:

https://sololearn.com/compiler-playground/cl7pH1od7NlR/?ref=app

In this example, the `repeatString` function takes a string `s` and an integer `n` as arguments and returns a new string consisting of `s` repeated `n` times.

Answer 5

Thank you

Answer 6

Bob_Li thank you very much

Answer 7

BroFar
that for loop is new to me.😎 I am stealing that...😁

Answer 8

BroFar thank you it's very simple and useful

Answer 9

BroFar

I did some experimentation and came up with an even shorter form. Plus a default value if nothing is inputted.

#include <iostream>
using namespace std;

int main() {
int n=1;
cin >> n;
for (; n--;){ cout<<"this\n";}
return 0;
}

Answer 10

Bob_Li just quick thought if leaving the auto keyword as an auto initializer out if this is a truly a good thing since auto was first recognized back in 2011 and has respectfully been used in the various versions of cpp since.
Yes , with the absence of auto _(); or auto _{}; may be something done here ... But best practice may say otherwise under real world activities and software.

Answer 11

BroFar but in the for loop, you are basically recasting int n to auto _(n).
if it is a one time use of n, this can be skipped and just directly use n.
But if n is going to be reused later on, yes, I agree that auto _(n); is the wiser choice.

Auto keyword is nice. But it is additional compiler work . If you really want to micro-optimize, you can also use for(int _(n);_--;){}

Answer 12

Gracias