Compilare: main.c: In function 'main': main.c:148:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &n, &m); ^~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:153:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &x, &y); ^~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:156:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &start.x, &start.y); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:157:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &stop.x, &stop.y); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~