Compilare: main.c: In function 'main': main.c:39:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d", &n, &m, &k ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:41:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &v[i] ); ^~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:44:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &c[i] ); ^~~~~~~~~~~~~~~~~~~~~~~~~~