Compilare: user.cpp: In function ‘int main()’: user.cpp:12:15: warning: unused variable ‘j’ [-Wunused-variable] int n,m,i,j,nr,l1,l2=0,maxx=0;; ^ user.cpp:12:20: warning: unused variable ‘l1’ [-Wunused-variable] int n,m,i,j,nr,l1,l2=0,maxx=0;; ^ user.cpp:12:23: warning: unused variable ‘l2’ [-Wunused-variable] int n,m,i,j,nr,l1,l2=0,maxx=0;; ^ user.cpp:13:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin ,"%d", &n); ^ user.cpp:15:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &x[i]); ^ user.cpp:16:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin ,"%d", &m); ^ user.cpp:18:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &nr); ^