Compilare: user.cpp: In function ‘void sdo(int, int, int)’: user.cpp:14:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(m[i]<x) ^ user.cpp:19:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(m[i]>x) ^ user.cpp:24:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(m[i]==x) ^ user.cpp: In function ‘int main()’: user.cpp:49:27: warning: format ‘%u’ expects argument of type ‘unsigned int*’, but argument 2 has type ‘long unsigned int*’ [-Wformat=] scanf("%u ", &m[i]); ^ user.cpp:51:22: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long unsigned int’ [-Wformat=] printf("%d", m[k]); ^ user.cpp:43:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sdo.in", "r", stdin); ^ user.cpp:44:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sdo.out", "w", stdout); ^ user.cpp:45:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ", &n, &k); ^ user.cpp:49:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%u ", &m[i]); ^