CODEWITHSUNDEEP
c++printingconsole
zucculent
zucculent

Reputation: 123

How do I make the console print things one at a time in C++ the way Java and Python do?

I'm trying to get a feel for C++ by creating a program to efficiently find highly composite numbers, but I'm facing an inconvenience. The console waits and then prints everything at once. I want it to print things one at a time like Java and Python do. How do I do that?

Here's the code:

#include <iostream>
int main(){
    int record=0; //Highest number of factors found in a number so far
    for(int n=1; n<2147483647; n++){
        int factors=1;
        for(int PPF=2; PPF<=n; PPF++){ //PPF="Possible Prime Factor"
            bool isPrime=true;        
            for(int i=2; i<PPF; i++){ //
                if(PPF%i==0){         //Determining if the PPF is prime
                    isPrime=false;    //
                    break;
                }
            }
            if(isPrime){
                if(n%PPF==0){ //Here is where I calculate the number of factors n has based on its prime factorization.
                    int PRP=1; //PRP="Prime Raised to Power"
                    int pow;
                    for(pow=1; n%(PRP*PPF)==0; pow++){ //Finding the exponent of a specific prime factor
                        PRP*=PPF;
                    }
                    factors*=pow;
                }else{
                    break;
                }
            }
        }
        if(factors>record){
            record=factors;
            std::cout<<n; //Print the highly composite number
            printf("\n"); //Gotta make a new line the old-fashioned way cuz this is a low-level language
        }
    }
}

I'm running this on VS Code with CodeRunner and all the necessary C/C++ extensions.

Upvotes: 0

Views: 278

Answers (1)

infinitezero
infinitezero

Reputation: 2077

More precisely, you need std::flush. std::endl prints a line break and flushes, but flush does so without the break. You can also print to std::cerr which is not buffered and prints everything directly.

Upvotes: 2

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