Compilare: user.cpp: In function ‘bool not0(nr_mare)’: user.cpp:87:32: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (a.nc == 0 || a.nc == 1 && a.cif[0] == 0)return 0; ^ user.cpp: In function ‘int main()’: user.cpp:100:22: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[600]’ [-Wformat=] scanf("%s",&c); ^ user.cpp:113:41: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(y % 4 == 1 || y == 3 && a.nc == 1) ^ user.cpp:110:22: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(y % 2 == 0) ^