Eroare de compilare: user.cpp: In function ‘int caut(int, int)’: user.cpp:19: warning: no return statement in function returning non-void user.cpp: In function ‘int main(int, char**)’: user.cpp:32: error: ‘stdin’ was not declared in this scope user.cpp:32: error: ‘freopen’ was not declared in this scope user.cpp:33: error: ‘stdout’ was not declared in this scope user.cpp:34: error: ‘scanf’ was not declared in this scope user.cpp:44: error: ‘printf’ was not declared in this scope user.cpp:48: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result