Compilare: user.cpp: In function ‘int main()’: user.cpp:17:21: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[1000005]’ [-Wformat=] fscanf(f,"%s",&a); ^ user.cpp:16:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ user.cpp:17:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",&a); ^ user.cpp:13:11: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,mx,mn; ^