Compilare: main.c: In function 'main': main.c:94:29: warning: variable 'dist' set but not used [-Wunused-but-set-variable] int parents[MAX_NODES], dist[MAX_NODES],t_desc[MAX_NODES],t_fin[MAX_NODES]; ^~~~ main.c:94:9: warning: unused variable 'parents' [-Wunused-variable] int parents[MAX_NODES], dist[MAX_NODES],t_desc[MAX_NODES],t_fin[MAX_NODES]; ^~~~~~~ main.c:91:23: warning: unused variable 'node' [-Wunused-variable] int nodes, edges, node, i; ^~~~ main.c:114:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d", &nodes, &edges); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:119:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d", &x[i], &y[i]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~