Compilare: user.cpp: In function ‘int pr(int, int)’: user.cpp:34:15: warning: unused variable ‘su’ [-Wunused-variable] int i,n=0,su=0; ^ user.cpp:47:24: warning: variable ‘start’ set but not used [-Wunused-but-set-variable] int s=0,smax=-1000,start,stop,var=1; ^ user.cpp:47:30: warning: variable ‘stop’ set but not used [-Wunused-but-set-variable] int s=0,smax=-1000,start,stop,var=1; ^ user.cpp: In function ‘int main()’: user.cpp:90:11: warning: variable ‘l’ set but not used [-Wunused-but-set-variable] int i,l,pa=0,pap=0; ^