Eroare de compilare: user.c:2:21: error: algorithm: No such file or directory user.c:4: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'namespace' user.c: In function 'main': user.c:14: error: 'for' loop initial declaration used outside C99 mode user.c:16: warning: implicit declaration of function 'sort' user.c:17: error: redefinition of 'i' user.c:14: error: previous definition of 'i' was here user.c:17: error: 'for' loop initial declaration used outside C99 mode