Compilare: main.c: In function 'erase': main.c:29:21: warning: suggest parentheses around comparison in operand of '|' [-Wparentheses] if ((idx << 1 | 1 > *heap_size)) { ~~^~~~~~~~~~~~ main.c: In function 'main': main.c:60:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^~~~~~~~~~~~~~~~~~~~ main.c:63:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &cod); ^~~~~~~~~~~~~~~~~~~~~~ main.c:70:4: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &input[input_size]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:73:4: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &x); ^~~~~~~~~~~~~~~~~~~~ main.c:69:14: warning: 'input_size' may be used uninitialized in this function [-Wmaybe-uninitialized] input_size++; ~~~~~~~~~~^~