Ubuntu does not have a C and C++ compilation environment by default
By default, Ubuntu does not have C and C++ compiler environment. When newly installed Ubuntu USES GCC, it will report an error and cannot find a certain header file. When compiling a demo such as hello world, an error will be reported:
error: stdio.h: No such file or directory
Install the C and C++ compilation environment

if there is no aptitude installed, use apt-get, e.g.
udo apt-get install build-essential