Member Avatar for jaepi

hello, there...

how would you send a signal to end this loop

string s;
int counter;
while(cin >> s){
   counter++;
}

thanks...

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Dani AI

Generated

Quick answer for : if you are running the program interactively you can send an EOF from the terminal to stop the loop — Ctrl+D on Unix/macOS (when the input buffer is empty) or Ctrl+Z then Enter on Windows. As suggested, a sentinel value (a special word like "quit") is an easy in-program way to stop reading.

Here is a simple pattern that reads whole lines, counts them, and stops on a sentinel:

#include <iostream>
#include <string>

int main() {
    std::string line;
    int counter = 0;
    while (std::getline(std::cin, line)) {
        if (line == "quit") break;   // sentinel
        ++counter;
    }
    std::cout << "count = " << counter << '\n';
}

Notes and tips: use std::getline when you need full lines (spaces preserved); operator>> reads tokens and skips whitespace. Initialize counters (e.g., int counter = 0) before using them. EOF is produced automatically when reading from a file or pipe; to simulate EOF in code for tests you can set the stream state with std::cin.setstate(std::ios::eofbit) and use std::cin.clear() to reset it. Finally, check the stream state (e.g., if (!std::cin)) if you need to distinguish EOF from other input errors.

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Member Avatar for Killer_Typo

determins what you are looking for.

since you have String s you can say if s == what i am looking for

break;

that will terminate the loop and continue.

so

while(cin >> s)
{
if (s == "what i want")
    break;
count++;
}
Member Avatar for jaepi

i was testing something...lol..thanks dude...reputation point for you! :)

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