Thread: [HELP] find closes number from array??

Hi,
well i have a userinput for an integer. And i have to get sqrt of that number and find the closes number from array... and i dont rly know how to do that... can anyone help?

heres the part for my input:

Code:

int poljubnostevilo;
cin >> poljubnostevilo;
cout <<endl;
int koren = sqrt (poljubnostevilo);
cout << koren << endl;

and here's the function i use to fill in the array with prime numbers,.. etc...so this function also has to return the closest number from the array to the sqrt of the inputed integer...

Code:

int funkcijatri(int x, int n){

n = 4;
int praarray[x];
int a=0;
int sum;
    while(a<x){
              n++;
              if(IsPrime(n) && (n>=a)){
                            praarray[a] = n;
                            cout << praarray[a] << ", ";
                            sum+= praarray[a];
                            a++;

                           
              }//konec if  
            
    }//konec while
    
    
    return sum/x;
       


    
}

Hope anyone can help me

ok, i know this will sound that im lazy or something, but can you post a sample of the code to implement please?, im kinda new to c++ and im not sure if i know how do that what you wrote... so any implementation samples? -would be really great