Compilare: user.cpp: In function ‘int main()’: user.cpp:30:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:31:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i = 0; i< n; i++) {scanf("%d", &a[i]);if(a[i])f = 1;} ^ user.cpp:32:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i = 0; i< n; i++) {scanf("%d", &b[i]);if(b[i])f = 1;} ^ user.cpp:35:66: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &v[i].sala, &v[i].start, &v[i].end); ^