话不多说直接上代码：

-(NSString *)digitUppercase:(NSString *)numstr{
     double numberals=[numstr doubleValue];
     NSArray *numberchar = @[@"零",@"壹",@"贰",@"叁",@"肆",@"伍",@"陆",@"柒",@"捌",@"玖"];
    NSArray *inunitchar = @[@"",@"拾",@"佰",@"仟"];
    NSArray *unitname = @[@"",@"万",@"亿",@"万亿"];
    //金额乘以100转换成字符串（去除圆角分数值）
    NSString *valstr=[NSString stringWithFormat:@"%.2f",numberals];
    NSString *prefix;
    NSString *suffix;
  if (valstr.length<=2) {
    prefix=@"零元";
    if (valstr.length==0) {
        suffix=@"零角零分";
    }
    else if (valstr.length==1)
    {
        suffix=[NSString stringWithFormat:@"%@分",[numberchar objectAtIndex:[valstr intValue]]];
    }
    else
    {
        NSString *head=[valstr substringToIndex:1];
        NSString *foot=[valstr substringFromIndex:1];
        suffix = [NSString stringWithFormat:@"%@角%@分",[numberchar objectAtIndex:[head intValue]],[numberchar  objectAtIndex:[foot intValue]]];
    }
}
else
{
    prefix=@"";
    suffix=@"";
    NSInteger flag = valstr.length - 2;
    NSString *head=[valstr substringToIndex:flag - 1];
    NSString *foot=[valstr substringFromIndex:flag];
    if (head.length>13) {
        return@"数值太大（最大支持13位整数），无法处理";
    }
    //处理整数部分
    NSMutableArray *ch=[[NSMutableArray alloc]init];
    for (int i = 0; i < head.length; i++) {
        NSString * str=[NSString stringWithFormat:@"%x",[head characterAtIndex:i]-'0'];
        [ch addObject:str];
    }
    int zeronum=0;
    
    for (int i=0; i<ch.count; i++) {
        int index=(ch.count -i-1)%4;//取段内位置
        NSInteger indexloc=(ch.count -i-1)/4;//取段位置
        if ([[ch objectAtIndex:i]isEqualToString:@"0"]) {
            zeronum++;
        }
        else
        {
            if (zeronum!=0) {
                if (index!=3) {
                    prefix=[prefix stringByAppendingString:@"零"];
                }
                zeronum=0;
            }
            prefix=[prefix stringByAppendingString:[numberchar objectAtIndex:[[ch objectAtIndex:i]intValue]]];
            prefix=[prefix stringByAppendingString:[inunitchar objectAtIndex:index]];
        }
        if (index ==0 && zeronum<4) {
            prefix=[prefix stringByAppendingString:[unitname objectAtIndex:indexloc]];
        }
    }
    prefix =[prefix stringByAppendingString:@"元"];
    //处理小数位
    if ([foot isEqualToString:@"00"]) {
        suffix =[suffix stringByAppendingString:@"整"];
    }
    else if ([foot hasPrefix:@"0"])
    {
        NSString *footch=[NSString stringWithFormat:@"%x",[foot characterAtIndex:1]-'0'];
        suffix=[NSString stringWithFormat:@"%@分",[numberchar objectAtIndex:[footch intValue] ]];
    }
    else
    {
        NSString *headch=[NSString stringWithFormat:@"%x",[foot characterAtIndex:0]-'0'];
        NSString *footch=[NSString stringWithFormat:@"%x",[foot characterAtIndex:1]-'0'];
        suffix=[NSString stringWithFormat:@"%@角%@分",[numberchar objectAtIndex:[headch intValue]],[numberchar  objectAtIndex:[footch intValue]]];
    }
}
        return [prefix stringByAppendingString:suffix];
}