with open('./check.gen', 'w') as f:
    for i in range(48, 57):
        f.write('case {}: \n'.format(str(i)))
    f.write('case 57: cout << "You entered a number!"; break;\n')

    for i in range(65, 90):
        f.write('case {}: \n'.format(str(i)))
    f.write('case 90: cout << "You entered a low-case letter!"; break;\n')

    for i in range(97, 122):
        f.write('case {}: \n'.format(str(i)))
    f.write('case 122: cout << "You entered a capital letter!"; break;\n')

    f.write('default: cout << "You entered a symbol!"; break;\n')