Compilare: main.c: In function 'main': main.c:9:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j = 1;j <= N; j++); ^~~ main.c:10:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' v[j] = 0; ^ main.c:6:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &M); ^~~~~~~~~~~~~~~~~~~~~ main.c:15:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &x, &y, &salt, &greutate); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~