Compilare: user.cpp: In function ‘int main()’: user.cpp:45:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(a);i++) ^ user.cpp: In function ‘void paranteza_rot(int)’: user.cpp:26:17: warning: ‘poz1’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(j=poz1-1;j<=poz2+1;j++) ^ user.cpp: In function ‘void paranteza_pat(int)’: user.cpp:35:25: warning: ‘poz1’ may be used uninitialized in this function [-Wmaybe-uninitialized] sort(st+poz1,st+poz2); ^