Respuesta :
Answer:
#include <iostream>
using namespace std;
bool isPrime (int num);
int main ()
{
int num=0;
cout << "Enter a number and I'll tell you whether it is prime: ";
cin >> num;
if (isPrime(num)==true)
cout << num << " is prime.";
else
cout << num << " is NOT prime.";
system("pause");
return 0;
}
bool isPrime(int input)
{
if(input<1)
return false;
else if (input == 1||input ==2 ||input==3)
{
return true;
}
else
{
for(int i=2; i<input; i++)
{
if(input%i==0)
return false;
}
return true;
}
}
Explanation:
Answer:
def Isprime(number):
if number>1 :
for i in range(2, number):
if (number % i) == 0:
print(number, "is not a prime number")
break
else:
print (number, "is a prime number")
else:
print(number, "is not a prime number")
x = Isprime(5)
y = Isprime(17)
z = Isprime(14)
Explanation:
A prime number is a number that can only be divided by 1 and itself. Prime number includes 5, 7, 11 etc.
def Isprime(number): A function is created Isprime and the argument number is used.
if number>1 : if the number is greater than 1 .
for i in range(2, number): This expression loop through 2 to the number(argument)
if (number % i) == 0: If the number divided by the looped value is equal to zero.
print(number, "is not a prime number") print the number is not a prime number
break This means stop and go back to the loop
else: otherwise
print (number, "is a prime number") Print the number is a prime number.
else: This else is under the first if statement.
print(number, "is not a prime number") print the number is not a prime number.
x = Isprime(5)
y = Isprime(17)
z = Isprime(14)
These call the function with the argument.
