Compilare: main.cpp: In function 'int main()': main.cpp:29:21: warning: unused variable 'x' [-Wunused-variable] int n , d , i , x , j , nr; ^ main.cpp:29:25: warning: unused variable 'j' [-Wunused-variable] int n , d , i , x , j , nr; ^ main.cpp:27:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pascal.in" , "r" , stdin); ^ main.cpp:28:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pascal.out" , "w" , stdout); ^ main.cpp:30:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n , &d); ^