Compilare: user.c: In function ‘main’: user.c:9:6: warning: unused variable ‘aux2’ [-Wunused-variable] int aux2,j,i,k1,k2,l,a[11],aux,b[11],rez[30],rez1[30],rez2[30],rez3[30],rez4[30],b2[11],a2[11]; ^ user.c:11:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s %s",nr1,nr2); ^ user.c:68:15: warning: iteration 29u invokes undefined behavior [-Waggressive-loop-optimizations] rez[i+1]=rez[i+1]+aux; ^ user.c:64:2: note: containing loop for (i=0;i<=30;i++){ ^