How do I take large numbers of input around 100000 digits in length in C/C++?

Question

Write your own rand function which returns random numbers in a given range(input) so that the numbers in the given range is equally likely to appear.

Answer 1

#include <string>
#include <sstream>
#include <ostream>
#include<conio.h>
#include <iostream>
#include <fstream>

using namespace std;

int main(){
stringstream str;

for (unsigned long n = 0; n < 100000; n++){
str << i;
}

std::ofstream outFile;
outFile.open("E://textcheck.txt");

outFile << "Welcome queryhome"+str.str();

getch();
return 0;
}