Compilare: main.c: In function 'binary_search': main.c:44:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.c: In function 'main': main.c:51:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("cautbin.in","r",stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:52:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("cautbin.out","w",stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:54:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^~~~~~~~~~~~~~~ main.c:56:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^~~~~~~~~~~~~~~~~~ main.c:58:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &no_questions); ^~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:60:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m); ^~~~~~~~~~~~~~~ main.c:61:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &y); ^~~~~~~~~~~~~~~