Question

How to generate 5 characters random string in C++

Answer 1

#include <iostream>

std::string rand_string(size_t size) {
    const char charset[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
    srand(time(NULL));
 
    std::string s;
    s.reserve(size);
 
    for (int i = 0; i < size; ++i) 
        s += charset[rand() % (sizeof(charset) - 1)];
     
    return s;
}
 
int main(void) {
    std::string s = rand_string(5);
 
    std::cout << s;
 
    return 0;
}
 
 
 
 
/*
run:
   
uIzcz
   
*/

 

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