c++怎样实现读取txt文件里的字符串,并统计有多少个数字、大小写字母...答:bufferSize = 256;char buffer[bufferSize];int range[rangeNum][2] = {{'A','Z'},{'a','z'},{'0','9'},{' ',' '},{0,256}};char print[rangeNum][100] = {"大写字母","小写字母","数字","空格","其他"};int ans[rangeNum];int main() { ifstream fin("D:...