c语言简单运用，越简单越好

Question

c语言输入不大于26的整数，输出全部大写字母
输入3
输出ABC

Answer 1

    int x = 0, n = 0; scanf_s("%d", &n); //std::cin >> n;
    while (x<n)printf_s("%c", (char)('A' + x)), ++x;// std::cout << (char)('A' + x), ++x;