Compilare: main.cpp: In function 'int main()': main.cpp:48:13: warning: unused variable 'a' [-Wunused-variable] int a = get_pos(i + 1,x + 1,y + 1); ^ main.cpp:23:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ main.cpp:26:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^