Compilare: main.cpp: In function 'int main()': main.cpp:36:28: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while (ch = fgetc(in) != '\n') { ^~~~ main.cpp:56:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ri > ansleft && ri != m + 1) ~~~^~~~~~~~ main.cpp:59:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ri < ansright && ri > num && ri <= m) ~~~^~~~ main.cpp:63:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ri < ansright && ri > num && ri < m) ~~~^~~ main.cpp:29:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lld", &n) ; ^ main.cpp:40:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lld", &num) ; ^