Compilare: user.cpp: In function ‘int lee2(int, int, int)’: user.cpp:67:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int blah(int, int, int)’: user.cpp:81:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int lee(int)’: user.cpp:39:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:87:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d",&n); ^ user.cpp:90:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i][j]); ^