import ballerina/io;

public function main() returns error? {
    int[] cps = [];
    foreach string c in ["a", "π", "字", "🐘"] {
        int cp = c[0].toCodePointInt();
        cps.push(cp);
        io:println(`${c} = ${cp}`);
    }
    io:println();
    foreach int i in cps {
        var c = check string:fromCodePointInt(i);
        io:println(`${i} = ${c}`);
    }
}