The difference between the %f and %lf formats in printf in C/C++
tags: C/C++ c language c++ algorithm
I just wrote an algorithm question. I used double type data, and the output was %lf, but the result always reported an error. Later, I found out that I changed it to %f and it passed. After further research, I discovered this detail, so I did the following notes.
First, let's take a look at the output formats of scanf and printf:
Yes, you read that right, there is a distinction between float and double types in scanf, that is, the former is used%f, the latter is used%lf, but when it comes to printf, the uniform is%f, for this small detail, the compiler I use—clion in jetbrain seems to handle it automatically, and did not report an error to me, so I always thought that scanf and printf are the same processing method, but the algorithm problem At that time, the OJ system seems to be unable to deal with such problems, so it is best to follow the above standards in the future
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