Eroare de compilare: main.cpp: In function 'int main()': main.cpp:70:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < n; i++) ~~^~~ main.cpp:94:4: error: invalid operands of types 'FILE* {aka _IO_FILE*}' and 'int' to binary 'operator<<' o << ans; ~~^~~~~~ main.cpp: In function 'char read(FILE*)': main.cpp:23:27: 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, len, f); ^ Non zero exit status: 1