Compilare: main.c: In function 'main': main.c:16:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(h[i]<0) ^~ main.c:18:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(h[i]>=N) ^~ main.c:7:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("lkperm.in","r",stdin),freopen("lkperm.out","w",stdout),scanf("%d%d%d",&n,&l,&k),h[0]=d[0]=1; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:7:36: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("lkperm.in","r",stdin),freopen("lkperm.out","w",stdout),scanf("%d%d%d",&n,&l,&k),h[0]=d[0]=1; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:7:69: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("lkperm.in","r",stdin),freopen("lkperm.out","w",stdout),scanf("%d%d%d",&n,&l,&k),h[0]=d[0]=1; ^~~~~~~~~~~~~~~~~~~~~~~~