Compilare: main.cpp: In function 'int main()': main.cpp:33:9: warning: unused variable 'X' [-Wunused-variable] int X,i,n,P,max=1,pm; ^ main.cpp:34:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ main.cpp:35:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[1]); ^ main.cpp:39:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^ main.cpp:33:23: warning: 'pm' may be used uninitialized in this function [-Wmaybe-uninitialized] int X,i,n,P,max=1,pm; ^~