Compilare: main.c: In function 'isArithmeticProg': main.c:10:11: warning: variable 'rptr' set but not used [-Wunused-but-set-variable] 10 | FILE *rptr; | ^~~~ main.c: In function 'main': main.c:34:68: warning: unused variable 'z' [-Wunused-variable] 34 | int n,m,a[100][100],left=1,right,v[10000],x=1,up=1,down,ok=1,t,z; | ^ main.c:34:66: warning: unused variable 't' [-Wunused-variable] 34 | int n,m,a[100][100],left=1,right,v[10000],x=1,up=1,down,ok=1,t,z; | ^ main.c:34:61: warning: unused variable 'ok' [-Wunused-variable] 34 | int n,m,a[100][100],left=1,right,v[10000],x=1,up=1,down,ok=1,t,z; | ^~ main.c:29:11: warning: variable 'wptr' set but not used [-Wunused-but-set-variable] 29 | FILE *wptr; | ^~~~