Compilare: user.c: In function ‘main’: user.c:16:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[c[j]]==0){ ^ user.c:19:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[c[j]]++; ^ user.c:28:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[c[i]]>0){ ^ user.c:33:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[c[i-suma]]==1) ^ user.c:35:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[c[i-suma]]--; ^ user.c:44:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[c[i]]++; ^ user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&n,&k); ^ user.c:12:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&ca); ^ user.c:15:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&c[j]); ^ user.c:27:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&c[i]); ^