Compilare: user.cpp: In function ‘int main()’: user.cpp:41:13: warning: unused variable ‘x’ [-Wunused-variable] int i,j,x,k,NR=0,L_secv,poz_1,poz_2,n,GATA,MAX=0,FINISH,o; ^ user.cpp:41:61: warning: unused variable ‘o’ [-Wunused-variable] int i,j,x,k,NR=0,L_secv,poz_1,poz_2,n,GATA,MAX=0,FINISH,o; ^ user.cpp:38:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arc.in", "r", stdin); ^ user.cpp:39:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arc.out", "w", stdout); ^ user.cpp:43:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&VARIANTA); scanf("%d",&N); ^ user.cpp:43:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&VARIANTA); scanf("%d",&N); ^ user.cpp:45:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^ user.cpp:11:22: warning: ‘poz_2’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int w=j; w<=N-k+j-1; w++) ^ user.cpp:41:35: note: ‘poz_2’ was declared here int i,j,x,k,NR=0,L_secv,poz_1,poz_2,n,GATA,MAX=0,FINISH,o; ^ user.cpp:11:24: warning: ‘poz_1’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int w=j; w<=N-k+j-1; w++) ^ user.cpp:41:29: note: ‘poz_1’ was declared here int i,j,x,k,NR=0,L_secv,poz_1,poz_2,n,GATA,MAX=0,FINISH,o; ^