Compilare: main.c: In function 'main': main.c:235:9: warning: unused variable 'time' [-Wunused-variable] int time; ^~~~ main.c:234:23: warning: variable 'dist' set but not used [-Wunused-but-set-variable] int v[MAX_NODES], dist[MAX_NODES]; ^~~~ main.c:231:23: warning: unused variable 'node' [-Wunused-variable] int nodes, edges, node, i; ^~~~ main.c:249:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f_in,"%d %d", &nodes, &edges); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:254:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f_in,"%d %d", &x[i], &y[i]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~