Float or double always gives answer in scientific notation if number of digits are 7 or more. Like an decimal number 10000000.5 it is giving 1e-08 something. I am wondering if we can print 10000000.5 without adding any new header file.
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):
问题:
回答1:
If you are printing to cout, use
std::cout.setf( std::ios::fixed, std::ios::floatfield );
See it work.
You might also want std::cout.precision(1) to set the number of digits after the decimal point.
回答2:
printf("%.1f", someFloat) should do that for you, if you want one decimal digit. If you want n decimal digits, then use %.nf
