Compilare: user.cpp: In function ‘int main()’: user.cpp:9:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:10:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[1]); ^ user.cpp:14:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^ user.cpp:20:65: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (v[l1-2]*max1-v[l1]>v[l1+1]*max1-v[l1+1]) {maxc=v[l1-2]*p; l3=l1;} ^