Compilare: main.c: In function 'main': main.c:25:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &N, &M); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:31:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d %d", &c.x, &c.y, &c.salt, &c.greutate); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~