C++ Program to check whether a number is a prime or composite number

Let us see the C++ Program to check whether a number is a prime or composite number.

// C++ Program to check whether a number is a prime or composite number. by T4Tutorials.com
#include<iostream>
using namespace std;
int main()
{
    int i,n,c=0;
   cout<<"Enter a number"<<endl;
    cin>>n;
    for (i=1;i<=n;i++)
    {
        if(n%i==0)
        c=c+1;
    }
    if (c==2)
    cout<<"The number is a Prime number"<<endl;
    else
    cout<<"The number is a Composite number"<<endl;
    return 0;
}

Output

Enter a number

4

The number is a Composite number

C++ Exercise | If else Statement

1. calculate the bill
2. character is small, capital or a special character
3. a number is even or odd
4. 0 is a positive or negative number
5. a positive and negative number
6. Enter Range of numbers and replaced them
7. a greater number among three numbers
8. Armstrong Number
9. ASCII code 
10. Find the Maximum value program in C++ (C Plus Plus).
11. maximum number
12. Maximum Number between two numbers 
13. Student Grade
14. the number is divisible by 11 or 5 or not
15. Triangle 
16. a triangle is an equilateral, isosceles or scalene
17. Leap year 
18. character is an alphabet or not
19. Grade Percentage
20. character is an alphabet, digit, or special character
21. character is an uppercase or lowercase.
22. Weekdays
23. a prime or composite number
24. hours and minutes as  AM or PM
25. swap the values of two numbers
26. update even to odd
27. Profit Loss
28. centimeter into meter and kilometer 
29. Triangle 
30. Salary
31. Even odd with goto statement.
32. area of the circle