Compilare: main.cpp: In function 'int main()': main.cpp:31:11: warning: unused variable 'j' [-Wunused-variable] int i,j,P,Max=1,pm; ^ main.cpp:32:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&N,&v[1]); ^ main.cpp:36:29: 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:31:21: warning: 'pm' may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,P,Max=1,pm; ^~