Compilare: user.c: In function ‘readHeader’: user.c:16:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &(h.n), &(h.s)); ^ user.c: In function ‘readNumbers’: user.c:23:10: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(buffer, 3, in); ^ user.c:24:10: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(buffer, n * 2, in); ^ user.c: In function ‘printResult’: user.c:81:1: warning: control reaches end of non-void function [-Wreturn-type] } ^