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