Qt错误:empty character constant
来源:互联网 发布:婚纱摄影基本软件 编辑:程序博客网 时间:2024/05/21 09:15
先看错误代码
void Widget::timerUpdate(){ QTime time = QTime::currentTime(); //获取当前时间 QString text = time.toString("hh:mm"); //转换成字符串 if((time.second() % 2) == 0) text[2]=''; ui->lcdNumber->display(text);}
编译,报错,错误:empty character constant
分析错误:“空字符常数”
查找结果:第8行中单引号中少了个空格,
原因:empty character constant这个英文的意思就是提示空字符。
修改如下:
void Widget::timerUpdate(){ QTime time = QTime::currentTime(); //获取当前时间 QString text = time.toString("hh:mm"); //转换成字符串 if((time.second() % 2) == 0) text[2]=' '; ui->lcdNumber->display(text);}
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