Question

Write a program to calculate the sum of all prime numbers between 100 and 200, including. A prime number is a natural number greater than 1 and can only be divided by 1 and itself. For example, 5 is a prime number because 5 can only be divided by 1 and 5. we are currently using cin/cout, for /while loops

Answer 1

Code:-

#include <iostream>
using namespace std;
int main()
{
int i,k=0,flag=0;
for(int x=100;x<=200;x++)
{
   k=x/2;
   for(i=2;i<=k;i++)
   {
if(x%i==0)
{
flag=1;
break;
}
   }
   if (flag==0)
   {
       cout <<x <<" is a prime number.\n";  
   }
   flag=0;
}
return 0;
}

Indentation:-

Output:-