Modernes C++ programmieren

//#(compile) c++; compiler:g132; options:-O3 -std=c++23; libs:-
//https://godbolt.org/z/a6qqbWKMs 
#include <cstdlib>
#include <iostream>

int main(int argc, char* argv[]) {
    for(int i=1; i<argc; ++i) {                // Start bei 1
        for(char* p=argv[i]; *p!='\0'; ++p) {
            char c = toupper(*p);
            std::cout << c;
        }
        std::cout << ' ';
    }
    std::cout << '\n';
}