char.c: In function 'main': char.c:16: warning: array subscript has type 'char' char.c:27: warning: array subscript has type 'char' char.c:28: warning: array subscript has type 'char' char.c:30: warning: array subscript has type 'char' char.c:32: warning: array subscript has type 'char' char.c:32: warning: array subscript has type 'char' char.c:14: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result char.c:17: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result char.c:21: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result char.c:11: warning: 'nmax' may be used uninitialized in this function