Question

How to initialize char array with random characters in C++

Answer 1

#include <iostream>
#include <cstdlib>
#include <ctime>
#include <string>
 
const int SIZE = 10;
 
void initialize_char_array_with_random_characters(char arr[], int size) {
    const std::string characters = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
     
    std::srand(std::time(nullptr));
         
    for (size_t i = 0; i < size; i++) {
        arr[i] = characters[std::rand() % characters.length()];
    }
}
 
int main() {
    char arr[SIZE] = "";
    int size = sizeof(arr) / sizeof(arr[0]);
  
    initialize_char_array_with_random_characters(arr, size);
  
    for (char ch : arr) {
        std::cout << ch << " ";
    }
}
 
   
   
/*
run:
   
n O I P c w 7 9 H N 
   
*/

 

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