Compilare: user.cpp: In function ‘int main()’: user.cpp:15:9: warning: unused variable ‘i’ [-Wunused-variable] int i,T0,T1,Tx,Ty,Tz,a,b,x,y,z,P,M,f1,f2,ff,w; ^ user.cpp:18:72: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d %d%d %d%d%d %d %lld",&T0,&T1,&a,&b,&x,&y,&z,&M,&N); ^ user.cpp:55:15: warning: ‘ff’ may be used uninitialized in this function [-Wmaybe-uninitialized] P = P - ff; ^ user.cpp:39:17: warning: ‘f2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(f1 == T0 && f2 == T1) ff = 1; ^ user.cpp:39:5: warning: ‘f1’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(f1 == T0 && f2 == T1) ff = 1; ^