Compilare: user.cpp: In function ‘int eval1(int, int)’: user.cpp:59:13: warning: unused variable ‘variab’ [-Wunused-variable] int variab, r=0, j=0, par=0; ^ user.cpp: In function ‘int eval2(int, int)’: user.cpp:137:13: warning: unused variable ‘variab’ [-Wunused-variable] int variab, r=0, j=0, par=0; ^ user.cpp: In function ‘int eval1(int, int)’: user.cpp:133:5: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int eval2(int, int)’: user.cpp:211:5: warning: control reaches end of non-void function [-Wreturn-type] } ^