write the prime no program in c++?
- 16 Answers
- 38324 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / tuhin pal chowdhury
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int num;
int flag = 0;
cout<<"Enter a number"<<endl;
cin>>num;
for(int i=2;i<num;i++)
{
if((num%i) == 0)
{
flag = 1;
break;
}
}
if (flag == 1)
cout<<"Not Prime"<<endl;
else
cout<<"Prime"<<endl;
getch();
}
| Is This Answer Correct ? | 1 Yes | 2 No |
Answer / ashwin kanjariya
I accept the last function since it has less time complexity than all other functions........
| Is This Answer Correct ? | 4 Yes | 7 No |
Answer / garima gupta
#include<iostream.h>
#include<conio.h>
#include<math.h>
class prime
{
private:
int i,j,j;
public:
void readn();
void display();
};
void prime::readn()
{
clrscr();
cout<<"enter no. of prime nos you want to display:"<<endl;
cin>>n;
}
void prime::display()
{
int flag;
for(i=2;i<n;i++)
{
flag=0;
for(j=2;j<=sqrt(i);j++)
{
if(i%j==0)
{
flag=1;break;
}
else(flag==0)
{
cout<<i<<" ";
}
}
}
}
void main()
{
prime p;
p.readn();
p.display();
getch();
}
| Is This Answer Correct ? | 10 Yes | 18 No |
Answer / adnan sheikh
#include<iostream.h>
#include<conio.h>
main()
{
int i,j,num;
cout<<"enter nay number";
cin>>num;
j=static_cast<int>(num/2);
for(int i=2;i<=j;i++)
{
if(!(num%i))
break;
}
if(i==(j+1))
cout<<"number is prime";
else
cout<<"number is not prime";
getch();
}
| Is This Answer Correct ? | 8 Yes | 19 No |
Answer / pramod k sharma
#include<iostream.h>
#include<conio.h>
main()
{
int n,i,f=1;
cout<<"enter any no to check prime";
cin>>n;
for(i=2;i<n;i++)
{
if(n%i==0)
k=2;
}
if(k==2)
cout<<"the no is not prime"<<endl;
else
cout<<"the no is prime";
}
getch();
| Is This Answer Correct ? | 14 Yes | 32 No |
What are exceptions c++?
What are the advantages of early binding?
What do you mean by pure virtual functions in C++? Give an example?
What is the purpose of template?
Explain how the virtual base class is different from the conventional base classes of the opps.
What is the full form of dos?
What is difference between array and vector in c++?
What is the extension of c++?
Is c++ vector dynamic?
What is heap sort in c++?
1. What does the following do: void afunction(int *x) { x=new int; *x=12; } int main() { int v=10; afunction(&v); cout<<v; } a) Outputs 12 b) Outputs 10 c) Outputs the address of v
What is an object in c++?
STL 
