Compilare: main.cpp: In function 'int main()': main.cpp:34:9: warning: unused variable 'x' [-Wunused-variable] int x = 3 >> 2; ^ main.cpp:27:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:29:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i]); ^