C++ Exercises: Find prime number within a range
C++ For Loop: Exercise-6 with Solution
Write a program in C++ to find a prime number within a range.
Sample Solution:
C++ Code:
#include <iostream>
#include<math.h>
using namespace std;
int main()
{
int num1,num2;
int fnd=0,ctr=0;
cout << "\n\n Find prime number within a range:\n";
cout << "--------------------------------------\n";
cout << " Input number for starting range: ";
cin>> num1;
cout << " Input number for ending range: ";
cin>> num2;
cout << "\n The prime numbers between "<<num1<<" and "<<num2<<" are:"<<endl;
for(int i=num1;i<=num2;i++)
{
for(int j=2;j<=sqrt(i);j++)
{
if(i%j==0)
ctr++;
}
if(ctr==0&&i!=1)
{ fnd++;
cout<<i<<" ";
}
ctr=0;
}
cout<<"\n\n The total number of prime numbers between "<<num1<<" to "<<num2<<" is: "<<fnd<<endl;
return 1;
}
Sample Output:
Find prime number within a range: -------------------------------------- Input number for starting range: 1 Input number for ending range: 100 The prime numbers between 1 and 100 are: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 The total number of prime numbers between 1 to 100 is: 25
Flowchart:

C++ Code Editor:
Contribute your code and comments through Disqus.
Previous: Write a program in C++ to check whether a number is prime or not.
Next: Write a program in C++ to find the factorial of a number.
What is the difficulty level of this exercise?
- Weekly Trends
- Python Interview Questions and Answers: Comprehensive Guide
- Scala Exercises, Practice, Solution
- Kotlin Exercises practice with solution
- MongoDB Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - JOINS
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join