Compilare: user.c: In function ‘skip_to_char’: user.c:19:17: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(temp_string, BLOCK_SIZE, in);\ ^ user.c:26:3: note: in expansion of macro ‘check’ check(*str, orig, fp); ^ user.c: In function ‘main’: user.c:54:7: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(temp_string, BLOCK_SIZE, in); ^ user.c:19:17: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(temp_string, BLOCK_SIZE, in);\ ^ user.c:59:3: note: in expansion of macro ‘check’ check(temp_string, string, in); ^ user.c:19:17: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(temp_string, BLOCK_SIZE, in);\ ^ user.c:65:4: note: in expansion of macro ‘check’ check(temp_string, string, in); ^ user.c:79:7: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(temp_string, BLOCK_SIZE, in); ^ user.c:19:17: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(temp_string, BLOCK_SIZE, in);\ ^ user.c:84:3: note: in expansion of macro ‘check’ check(temp_string, string, in); ^ user.c:19:17: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(temp_string, BLOCK_SIZE, in);\ ^ user.c:90:3: note: in expansion of macro ‘check’ check(temp_string, string, in); ^ user.c:19:17: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(temp_string, BLOCK_SIZE, in);\ ^ user.c:95:4: note: in expansion of macro ‘check’ check(temp_string, string, in); ^ user.c:19:17: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(temp_string, BLOCK_SIZE, in);\ ^ user.c:103:5: note: in expansion of macro ‘check’ check(temp_string, string, in); ^