这是我11年级CS班的。我正在创建一个将水平转换为百分比的程序。这是我为python代码制作的一个列表，该列表向用户显示当他们进入一个级别（例如3+）时的百分比，但是我想知道我是否可以在C ++中执行类似的操作。
grade= {}
grade['R-'] = '0%'
grade['R'] = '30%'
grade['R+'] = '40%'
grade['1-'] = '50%'
grade['1'] = '53%'
grade['1+'] = '57%'
grade['2-'] = '60%'
grade['2'] = '63%'
grade['2+'] = '67%'
grade['3-'] = '70%'
grade['3'] = '73%'
grade['3+'] = '77%'
grade['4-'] = '80%'
grade['4'] = '87%'
grade['4+'] = '95%