generate random character c++ code example

Example 1: c++ generate random char

char cch = 'a' + rand()%26;

Example 2: getting a random letter in c++

char c;
    int r;

    srand (time(NULL));    // initialize the random number generator
    for (i=0; i<num; i++)
    {    r = rand() % 26;   // generate a random number
          c = 'a' + r;            // Convert to a character from a-z
          cout << c;
    }

Example 3: int random string generator c++

string  gen_random(int len) {
        string s;
        static const char alphanum[] =
            "0123456789"
            "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
            "abcdefghijklmnopqrstuvwxyz";

        for (int i = 0; i < len; ++i) {
            s+= alphanum[rand() % (sizeof(alphanum) - 1)];
             }

     return s;

Example 4: C++ generate a random letter

#include <iostream>

int main() {
    srand(time(0));
    std::cout <<"random uppercase = " << char('A' + rand() % 26) << std::endl;
    // or
    std::cout <<"random uppercase = " << char('a' + rand() % 26) << std::endl;
}