Eroare de compilare: user.cpp:3:21: error: iostream.h: No such file or directory user.cpp: In function ‘int comp(const void*, const void*)’: user.cpp:8: error: ‘strcmp’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:19: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp:60: error: ‘strcpy’ was not declared in this scope user.cpp:95: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp:107: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp:124: error: ‘strlen’ was not declared in this scope user.cpp:131: error: ‘qsort’ was not declared in this scope user.cpp:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result