Compilare: main.cpp: In function 'int reg(int*, int, int, int)': main.cpp:19:15: warning: unused variable 'j' [-Wunused-variable] int i,s=0,j; ^ main.cpp: In function 'int main()': main.cpp:110:13: warning: unused variable 'k' [-Wunused-variable] int k=0; ^ main.cpp:46:22: warning: variable 's2' set but not used [-Wunused-but-set-variable] int p,n,m,s,s1=0,s2=0,i,j,x,r=0,v[500][500],t=INT_MAX,q=INT_MIN,k=0,minim,poz,ok=1; ^~ main.cpp:46:31: warning: unused variable 'x' [-Wunused-variable] int p,n,m,s,s1=0,s2=0,i,j,x,r=0,v[500][500],t=INT_MAX,q=INT_MIN,k=0,minim,poz,ok=1; ^ main.cpp:46:69: warning: unused variable 'k' [-Wunused-variable] int p,n,m,s,s1=0,s2=0,i,j,x,r=0,v[500][500],t=INT_MAX,q=INT_MIN,k=0,minim,poz,ok=1; ^ main.cpp:50:14: warning: iteration 5000000 invokes undefined behavior [-Waggressive-loop-optimizations] fr[i]=0; ~~~~~^~ main.cpp:48:15: note: within this loop for(i=0; i<=5000000; i++) ~^~~~~~~~~