Eroare de compilare: main.cpp:8:8: error: 'N' was not declared in this scope char r[N]; ^ main.cpp: In function 'char N()': main.cpp:12:15: error: 'r' was not declared in this scope fread(r,1,R,stdin),o=0; ^ main.cpp:13:12: error: 'r' was not declared in this scope return r[o++]; ^ main.cpp: In function 'int main()': main.cpp:48:62: 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),freopen("sdo.out","w",stdout); ^ main.cpp:48:62: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] Non zero exit status: 1