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comment savoir si un nombre est premier c++

Wandering Willet answered on December 5, 2021 Popularity 1/10 Helpfulness 1/10

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comment savoir si un nombre est premier c++

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#include <conio.h> 
#include <iostream>
using namespace std;
int main() {
  int x, a;
  cout << "Enter The No. :";
  cin >> x;
  int prime(unsigned int);
  a = prime(x);
  if (a == 1)
    cout << "It Is A Prime No." << endl;
  else
  if (a == 0)
    cout << "It Is Composite No." << endl;
  getch();
}

int prime(unsigned int x) {
  if (x == 1) {
    cout << "It Is Neither Prime Nor Composite";
    return 2;
  }
  if (x == 2 || x == 3 || x == 5 || x == 7)
    return 1;
  if (x % 2 != 0 && x % 3 != 0 && x % 5 != 0 && x % 7 != 0)
    return 1;
  else
    return 0;
}

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Source: www.it-swarm-fr.com

Tags: c++

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Contributed on Dec 05 2021

Wandering Willet

0 Answers Avg Quality 2/10

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bool check_prime(int num) {
for (int i = num - 1; i > 1; i--) {
    if ((num % i) == 0)
        return false;
}
return true;
}

Popularity 1/10 Helpfulness 1/10 Language cpp

Source: www.it-swarm-fr.com

Tags: c++

Link to this answer
Share Copy Link

Contributed on Dec 05 2021

Wandering Willet

0 Answers Avg Quality 2/10

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comment savoir si un nombre est premier c++

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