题解 | #统计大写字母个数#

const rl = require("readline").createInterface({input:process.stdin});
var iter = rl[Symbol.asyncIterator]();
const readline = async() => (await iter.next()).value;

void async function(){
    const str = await readline();
    let cnt = 0;
    for(const c of str){
        if(c<="Z" && c>= "A") cnt ++;
    }
    console.log(cnt);
}()