Compilare: user.cpp: In function ‘int main()’: user.cpp:19:1: warning: this ‘else’ clause does not guard... [-Wmisleading-indentation] else ^~~~ user.cpp:21:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘else’ return 0; ^~~~~~ user.cpp:7:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cmmdc.in","r",stdin); ^ user.cpp:8:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cmmdc.out","w",stdout); ^