Compilare: main.cpp: In member function 'char InParser::read_ch()': main.cpp:84:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^ main.cpp: In function 'int main()': main.cpp:156:40: warning: 'cfin' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, m, i, l, c, x, maxim, lfin, cfin; ^~~~ main.cpp:156:34: warning: 'lfin' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, m, i, l, c, x, maxim, lfin, cfin; ^~~~