Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:135:26: error: ‘sort’ was not declared in this scope sort(obs+1,obs+k+1,compx); ^ user.cpp: At global scope: user.cpp:246:13: error: redefinition of ‘std::ifstream fin’ ifstream fin("barbar.in"); ^ user.cpp:25:10: error: ‘std::ifstream fin’ previously declared here ifstream fin("ai.in"); ^ user.cpp:247:14: error: redefinition of ‘std::ofstream fout’ ofstream fout("barbar.out"); ^ user.cpp:26:10: error: ‘std::ofstream fout’ previously declared here ofstream fout("ai.out"); ^ user.cpp:252:6: error: conflicting declaration ‘char x’ char x; ^ user.cpp:23:56: error: ‘x’ has a previous declaration as ‘int x’ int n, xl1, xl2, yl1, yl2, xt, yt, xr1, xr2, yr1, yr2, x, y; ^ user.cpp: In function ‘int main()’: user.cpp:279:5: error: redefinition of ‘int main()’ int main(){ ^ user.cpp:120:5: error: ‘int main()’ previously defined here int main() ^