Error "call of overloaded 'sqrt(int&)'

Asked Aug 23 '17 at 22:11

Active Aug 23 '17 at 22:33

Viewed 35 times

So I'm just starting off in C++ reading the book "C++ without fear second edition" and I'm doing one of the examples which has me write this code:

#include <iostream>
#include <cmath>
  using namespace std;

int main() {
  int n;
  int i;
  int is_prime = true;

  cout << "Enter a number and press enter: ";
  cin >> n;

  i = 2;
  while (i <= sqrt(n)) {
    if (n % i == 0) {
      is_prime = false;
    }
    i++;
    if (is_prime) {
      cout << "Number is prime" << endl;
    } else {
      cout << "Number is not prime" << endl;
    }
  }
  system("PAUSE");
  return 0;

}

However when I attempt to compile I get the error

14 C:\Users\Owner\Desktop\C++\PrimeCheck.cpp call of overloaded `sqrt(int&)'

edited Aug 23 '17 at 22:33

Barmar

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asked Aug 23 '17 at 22:11

Ryan Babecki

3

Advice -- there is no need to post an entire program showing `while` loops, I/O, and `system` calls to show us you're having problems calling the `sqrt` function. A two or 3 line `main()` program would have shown the issue. – PaulMcKenzie Aug 23 '17 at 22:13
1

Also, *"call of overloaded"* is not a proper error message. Please post an MCVE and the actual error you get. – Baum mit Augen Aug 23 '17 at 22:19
Does [this program compile successfully](https://ideone.com/meKcnY)? If not, then you need to tell us what compiler you're using. – PaulMcKenzie Aug 23 '17 at 22:20
Duplicate question, see this answer: https://stackoverflow.com/a/4217970/1699328 – Dom Aug 23 '17 at 22:22
I'm using the Dev-C++ compiler (or whatever compiler comes installed with that IDE.) – Ryan Babecki Aug 23 '17 at 22:27
Edited with an image of the error. – Ryan Babecki Aug 23 '17 at 22:33
@Dom If it's a duplicate, use "flag" to mark it as a duplicate. – Barmar Aug 23 '17 at 22:35

Error "call of overloaded 'sqrt(int&)'

0 Answers0