Compilare: user.cpp: In function ‘unsigned int caut(unsigned int)’: user.cpp:28:18: warning: unused variable ‘sol’ [-Wunused-variable] unsigned int sol=-1; ^ user.cpp: In function ‘int main()’: user.cpp:65:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(y!=-1) ^ user.cpp:43:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("loto.in", "r", stdin); ^ user.cpp:44:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("loto.out", "w", stdout); ^ user.cpp:45:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%u%u", &n, &g); ^ user.cpp:47:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%u", &v[i]); ^