I will learn to C and C + +, save the children

CodePudding user response:

Try # include & lt; Iostream. H>

# include "XXX" XXX must be in the current project directory
#include XXX can compile environment can identify directory

CodePudding user response:

#include//not. H
The use of cin, cout, endl needs to contain namespace using namespace STD. Every time or use the specified STD: : cin STD: : cout