Compilare: user.c: In function ‘main’: user.c:23:13: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘char *’ [-Wformat=] fscanf(fin,"%d",&v[i][j]); ^ user.c:43:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[c[i][j]]++; ^ user.c:20:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.c:23:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i][j]); ^