Compilare: user.cpp: In function ‘int main()’: user.cpp:38:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l[i]>=max) ^ user.cpp:45:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l[i]==x) ^ user.cpp:9:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%ld",&n); ^ user.cpp:12:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%ld",&c[i]); ^ user.cpp:44:21: warning: ‘pmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(i=pmax,x=max;i>=0 && x>0 ;i--) ^