Compilare: main.cpp: In function 'int main()': main.cpp:25:9: warning: unused variable 'i' [-Wunused-variable] lll i , j , d , cnt ; ^ main.cpp:25:13: warning: unused variable 'j' [-Wunused-variable] lll i , j , d , cnt ; ^ main.cpp:27:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("teste.in", "r", stdin); ^ main.cpp:28:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("teste.out", "w", stdout); ^