Compilare: main.cpp: In function 'int main()': main.cpp:42:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(p) ^ main.cpp:25:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:27:43: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &v[i].a, &v[i].b); ^ main.cpp:28:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &k, &p); ^