Eroare de compilare: user.cpp:1:22: error: iostream.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:18: error: ‘qsort’ was not declared in this scope user.cpp: In function ‘void citire()’: user.cpp:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result