Compilare: main.cpp: In function 'int main()': main.cpp:37:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ssm.in", "r", stdin); ^ main.cpp:38:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ssm.out", "w", stdout); ^ main.cpp: In function 'char next()': main.cpp:10:45: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer, 1, BUFFER_SIZE, stdin); ^ main.cpp: In function 'int main()': main.cpp:59:8: warning: 'last_pos' may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d %d\n", max_sum, starting_pos + 1, last_pos + 1); ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:59:8: warning: 'starting_pos' may be used uninitialized in this function [-Wmaybe-uninitialized]