Compilare: main.cpp: In function 'void {anonymous}::remove_value(int, int, int)': main.cpp:98:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < stk.size(); ++i) if (stk[i].y == mx) { ~~^~~~~~~~~~~~ main.cpp: In member function 'char {anonymous}::InParser::nextch()': main.cpp:27:28: 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, BMAX, fi); ^ main.cpp: At global scope: main.cpp:57:36: warning: '{anonymous}::q_val' defined but not used [-Wunused-variable] int n, q, q_start, q_stop, q_cost, q_val, q_pos; ^~~~~