Borderou de evaluare (job #587594)

Compilare: main.cpp: In function 'int main()': main.cpp:68:23: warning: unused variable 'sum' [-Wunused-variable] 68 | long long n, a, b,sum; | ^~~ main.cpp:66:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 66 | freopen("rw.out", "w", stdout); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:16:9: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 16 | fread(buff, 1, 4096, fin); | ~~~~~^~~~~~~~~~~~~~~~~~~~