Compilare: user.cpp: In function ‘int main()’: user.cpp:74:14: warning: statement has no effect [-Wunused-value] for(c; v[vp[c]]<=q[qp[i]]&&c<=n; c++) ^ user.cpp:59:13: warning: unused variable ‘j’ [-Wunused-variable] int n,i,j,m,l,lm,c,x ; ^ user.cpp:59:17: warning: unused variable ‘l’ [-Wunused-variable] int n,i,j,m,l,lm,c,x ; ^ user.cpp:59:19: warning: unused variable ‘lm’ [-Wunused-variable] int n,i,j,m,l,lm,c,x ; ^ user.cpp:57:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secvmax.in","r",stdin); ^ user.cpp:58:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secvmax.out","w",stdout); ^ user.cpp:60:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:63:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",v+i); ^ user.cpp:68:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] {qp[i]=i; scanf("%d",q+i);} ^